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iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)

Refurbished Apple iMac

4.8/5
(12 reviews)
Starting at
£267.08before trade-in
£1,049.00 newSave £781.92
See options
  • 1-year minimum warranty
  • Free delivery on all items
  • Free returns until January 31st
  • Awesome customer service

All iMac options

Buy a refurbished iMac and enjoy high-resoluti...

269 products
Best Seller
iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)

4.8/5
(12)
Starting at
£267.08
£1,049.00 new
Best Seller
iMac 21,5-inch Retina (2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)

iMac 21,5-inch Retina (2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)

4.6/5
(1)
Starting at
£349.00
£2,394.12 new
Best Seller
iMac 21,5-inch (Late 2015) Core i5 2,8GHz - SSD 28 GB + HDD 972 GB - 8GB QWERTY - English (US)

iMac 21,5-inch (Late 2015) Core i5 2,8GHz - SSD 28 GB + HDD 972 GB - 8GB QWERTY - English (US)

Starting at
£179.00
£1,489.00 new
iMac 21,5-inch Retina (Early 2019) Core i5 3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

iMac 21,5-inch Retina (Early 2019) Core i5 3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

4.3/5
(2)
Starting at
£772.00
£1,368.00 new
iMac 21-inch (Late 2015) Core i5 2.8GHz - HDD 1 TB - 8GB QWERTY - English (UK)

iMac 21-inch (Late 2015) Core i5 2.8GHz - HDD 1 TB - 8GB QWERTY - English (UK)

5/5
(1)
Starting at
£179.00
£349.99 new
iMac 24-inch Retina (Mid-2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 24-inch Retina (Mid-2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

4.7/5
(3)
Starting at
£845.00
£1,909.00 new
iMac 24-inch Retina (April 2021) Apple M1 3,1GHz - SSD 256 GB - 8GB QWERTY - English (US)

iMac 24-inch Retina (April 2021) Apple M1 3,1GHz - SSD 256 GB - 8GB QWERTY - English (US)

Starting at
£810.00
£1,669.00 new
iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - HDD 1 TB - 8GB QWERTY - English (US)

4/5
(2)
Starting at
£530.00
£1,149.00 new
iMac 24-inch Retina (Early 2021) M1 3.2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 24-inch Retina (Early 2021) M1 3.2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

Starting at
£776.02
£1,449.00 new
iMac 27-inch Retina (Mid-2020) Core i5 3,3GHz - SSD 512 GB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2020) Core i5 3,3GHz - SSD 512 GB - 32GB QWERTY - English (UK)

5/5
(1)
Starting at
£923.56
£2,599.00 new
iMac 21-inch (Late 2015) Core i5 2.8GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21-inch (Late 2015) Core i5 2.8GHz - HDD 1 TB - 8GB QWERTY - English (US)

Starting at
£294.82
£1,369.43 new
iMac 21,5-inch Retina (Mid-2017) Core i5 3GHz - HDD 1 TB - 8GB QWERTY - English (UK)

iMac 21,5-inch Retina (Mid-2017) Core i5 3GHz - HDD 1 TB - 8GB QWERTY - English (UK)

Starting at
£341.31
£1,499.00 new
iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - SSD 256 GB - 8GB QWERTY - English (UK)

3.8/5
(7)
Starting at
£446.00
£1,500.00 new
iMac 24-inch Retina (Mid-2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 24-inch Retina (Mid-2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

4.6/5
(1)
Starting at
£754.00
£1,909.00 new
iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 1 TB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 1 TB - 32GB QWERTY - English (UK)

4.9/5
(2)
Starting at
£955.00
£3,839.00 new
iMac 21,5-inch (Late 2012) Core i5 2,7GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch (Late 2012) Core i5 2,7GHz - HDD 1 TB - 8GB QWERTY - English (US)

Starting at
£126.80
£1,369.00 new
iMac 21,5-inch (Late 2013) Core i5 2,7GHz - HDD 1 TB - 8GB QWERTY - English (UK)

iMac 21,5-inch (Late 2013) Core i5 2,7GHz - HDD 1 TB - 8GB QWERTY - English (UK)

4.6/5
(3)
Starting at
£281.08
£1,289.00 new
iMac 21,5-inch (Mid-2011) Core i5 2,7GHz - HDD 1 TB - 4GB QWERTY - English (UK)

iMac 21,5-inch (Mid-2011) Core i5 2,7GHz - HDD 1 TB - 4GB QWERTY - English (UK)

Starting at
£299.04
£1,279.00 new
iMac 27-inch Retina (Late 2015) Core i7 4GHz - HDD 1 TB - 16GB QWERTY - English (UK)

iMac 27-inch Retina (Late 2015) Core i7 4GHz - HDD 1 TB - 16GB QWERTY - English (UK)

Starting at
£500.00
£1,025.84 new
iMac 27-inch Retina (Mid-2017) Core i5 3,4GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2017) Core i5 3,4GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)

Starting at
£660.00
£2,329.00 new
iMac 27-inch Retina (Mid-2020) Core i5 3,3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2020) Core i5 3,3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

Starting at
£844.30
£2,599.00 new
iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 1 TB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 1 TB - 32GB QWERTY - English (UK)

4.6/5
(1)
Starting at
£855.00
£1,948.92 new
iMac 24-inch Retina (Early 2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

iMac 24-inch Retina (Early 2021) M1 3,2GHz - SSD 256 GB - 8GB QWERTY - English (UK)

Starting at
£902.00
£1,669.00 new
iMac 21,5-inch Retina (Late 2015) Core i5 3,1GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch Retina (Late 2015) Core i5 3,1GHz - HDD 1 TB - 8GB QWERTY - English (US)

Starting at
£266.00
£1,199.00 new
iMac 27-inch (2013) Core i5 3,2GHz - HDD 1 TB - 8GB QWERTY - English (UK)

iMac 27-inch (2013) Core i5 3,2GHz - HDD 1 TB - 8GB QWERTY - English (UK)

Starting at
£320.00
£1,999.00 new
iMac 27-inch (Late 2013) Core i5 3,2GHz - SSD 256 GB - 8GB QWERTY - English (US)

iMac 27-inch (Late 2013) Core i5 3,2GHz - SSD 256 GB - 8GB QWERTY - English (US)

Starting at
£350.00
£1,799.00 new
iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - HDD 1 TB - 8GB QWERTY - English (US)

Starting at
£399.99
£1,699.00 new
iMac 27-inch (Late 2012) Core i5 2,9GHz - HDD 1 TB - 16GB QWERTY - English (UK)

iMac 27-inch (Late 2012) Core i5 2,9GHz - HDD 1 TB - 16GB QWERTY - English (UK)

5/5
(2)
Starting at
£449.00
£1,199.00 new
iMac 21,5-inch Retina (Early 2019) Core i5 3,0GHz - SSD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch Retina (Early 2019) Core i5 3,0GHz - SSD 1 TB - 8GB QWERTY - English (US)

Starting at
£485.00
£2,799.00 new
iMac 21,5-inch Retina (2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (US)

iMac 21,5-inch Retina (2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (US)

Starting at
£500.00
£2,394.12 new
iMac 27-inch Retina (Mid-2017) Core i5 3,4GHz - SSD 32 GB + HDD 1 TB - 8GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2017) Core i5 3,4GHz - SSD 32 GB + HDD 1 TB - 8GB QWERTY - English (UK)

5/5
(1)
Starting at
£505.00
£1,674.00 new
iMac 27-inch Retina (Late 2015) Core i5 3,2GHz - SSD 512 GB - 16GB QWERTY - English (UK)

iMac 27-inch Retina (Late 2015) Core i5 3,2GHz - SSD 512 GB - 16GB QWERTY - English (UK)

Starting at
£537.86
£2,580.00 new
[UK] [PLP] Holidays 2024
Take on the new term with the best student laptops 2024
laptops

Take on the new term with the best student laptops 2024

Get back-to-school ready with refurbished tech and the best student laptops on Back Market. Whatever your degree, these great deals have you covered.

Refurbished Apple iMac's customer reviews

4.2/5

628 verified reviews in the last 12 months.

  • A

    Alan H.

    Purchased on the 28 November 2024

    4.6/5

    Arrived ahead of schedule well packed and insulated. Have migrated my old system successfully but found I could not use my old printer as the new Mac runs at 64 bits not 32. So purchased a new printer and attached successfully. Really pleased with performance and the condition of the Mac is excellent and above expectations. My only slight gripe is that the Mac came with a Koorui keyboard and Mouse when I expected a reconditioned one from Apple. The problem is that the @ character is on the 2/" key and the " character is on the '@ key and I don't seem to be able to fix this. Regards Alan Herbage

    Reviewed in United Kingdom on 16 December 2024

    iMac 21,5-inch Retina (2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)
  • M

    Maggie-may H.

    Purchased on the 11 December 2023

    4.8/5

    Amazing! I ordered this iMac because of the heavy specs and great price and I am not disappointed! Item arrived a little later than advertised but was delivered in A1 condition. This iMac came in an original Apple box with original Apple wireless keyboard & mouse and had the smell of a new car, yummy! Took it for a road test and the specs are exactly as advertised - the entire unit and accessories are in EXCELLENT condition (just a couple of minor scratches on the base stand which are barely visible). I'll never buy new again, refurbished tech is the future people! Happy customer :-)

    Reviewed in United Kingdom on 9 December 2024

    iMac 27-inch Retina (Late 2014) Core i7 4GHz - SSD 1 TB - 32GB QWERTY - English (US)
  • R

    Richard D.

    Purchased on the 25 October 2024

    5/5

    I am quietly ecstatic about my 21.5” iMac! Almost set itself up on its own, it’s squeaky clean and unmarked. I’m less chuffed by the keyboard and mouse combo, a bit plasticky and a bit of a faff. The rechargeable battery is useful but not enough for me to fall in love. On the other hand, my old ally-cased Magic Keyboard and keypad works perfectly so no probs. All in all, you’ve played a blinder: well done!

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)
  • J

    Janice S.

    Purchased on the 6 October 2024

    5/5

    Thrilled with my IMac, had been thinking about changing my old one for a while as it was getting very slow and freezing but the cost of a new one was daunting. Was recommended Back market by a friend. Delivery was as promised and it is as good as new, couldn't be happier.

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)
  • K

    Katie L.

    Purchased on the 12 August 2024

    4.6/5

    I have come to live back market, the products are always fantastic and even if there is an issue they sort it out really quickly. I prefer to buy refurbished as it's more eco friendly and that's exactly what back market stands for which is fantastic. high quality goods at cheaper prices and eco friendly, can't fault it at all. my only issue is that the descriptions could be much clearer. as a person with dyslexia I struggle to read black text on a white screen and I misread so ething which was disappointing but the customer service was fantastic and it was sorted really quickly. I am going to be ordering phones for my teenagers very soon as Christmas isn't far away and I'll definitely be buying them from back market.

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - HDD 1 TB - 16GB QWERTY - English (US)
  • D

    David M.

    Purchased on the 15 February 2024

    5/5

    High quality machine, refurbished to a really good standard. I'm still moving stuff from my old machine, which is taking longer than I had hoped - shows how old my original machine is. Super fast delivery, and good communication. Really happy with the service received.

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)
  • G

    Geoff K.

    Purchased on the 19 October 2024

    4.2/5

    (second attempt!) We've had a struggle, to be honest. 15 attempts to create a new password failed at the last fence, when the verification step either produced nothing, or a message saying effectively "Can't do it; try later" An expert neighbour talked to an Apple agent, who freed the blockage - thought to be caused by an incomplete cleen sweep of the pc. Since then we've clawed our way into Apple-land, but it hasn't appeare as user-friendly as our expert promised! I'll probably stick to my Win 11, while struggling to help my wife get to grips with the new system.

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - SSD 512 GB - 8GB QWERTY - English (UK)
  • S

    Simon L.

    Purchased on the 3 November 2024

    5/5

    When my delivery arrived I found that the screen what smashed on the top right hand corner, I whattsapp Denis from the company at about 1930 in the evening and attached a picture, Denis responded immediately he dealt with everything from the the return to the supply of a new computer, he also kept me informed throughout the process. I cannot sing his praises enough.

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch Retina (Mid-2017) Core i5 3GHz - HDD 1 TB - 16GB QWERTY - English (UK)
  • N

    Nicholas G.

    Purchased on the 16 October 2024

    4.8/5

    Terrific so far. Arrived promptly, well packaged. Needed to install Ventura - great machine, a delight to work smoothly again with a machine that cost 3000 more in 2017. Good to have a warranty. Hope all remains reliable. Very satisfied, will return to browse for replacements in future - for me makes great sense.

    Reviewed in United Kingdom on 9 December 2024

    iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 1 TB - 32GB QWERTY - English (UK)
  • J

    John C.

    Purchased on the 22 October 2024

    4.2/5

    All appears well but I haven’t yet set up the computer as I have to work around my wife for whom I am sole carer and to find a period when I can give full concentration to this to avoid mistakes. I will comment once I have the system running

    Reviewed in United Kingdom on 9 December 2024

    iMac 21,5-inch (Mid-2017) Core i5 2,3GHz - SSD 256 GB - 8GB QWERTY - English (UK)
See all 628 reviews

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What are refurbished computers and laptops?


Refurbished computers and laptops are second hand devices that have been restored to their original condition and performance by professionals. At Back Market, we handpick each and every one of the sellers on our platform to make sure you're getting the best refurbished devices available. The refurbishment process typically involves rigorous testing, cleaning, and repairs, so that the laptop meets the same standards as a brand new device. So when you buy refurbished you're basically getting a new laptop at a discounted price.

 

Benefits of buying a refurbished computer or laptop


At Back Market, customers save up to 50% off compared to the price of new on certified refurbished computer or laptop models. The best part is, you don't have to sacrifice performance quality in order to save money; all refurbished devices on our marketplace have been fully reconditioned, cleaned, inspected and tested to the same standards as a new one. This is the biggest difference between buying a used or second hand computer or laptop compared to a refurbished one.

Buying a reconditioned computer or laptop is also an environmentally friendly option. A refurbished computer or laptop is often a second hand device that has been restored and updated to meet manufacturer standards, which means you'll be helping to keep old computer or laptops out of our landfills, reduce electronic waste, and minimise your carbon footprint.

 

Where to find a cheap refurbished computer or laptop?


If you're looking for cheaper computer or laptop options and don't want to pay full price, you'll find the biggest selection, highest product quality and lowest prices on restored computer or laptop models at Back Market. That's because we specialise specifically in refurbished tech and take the time to carefully vet every seller on our marketplace to ensure customers are getting reliable devices that perform like-new. We have several refurbed computer or laptop in price ranges to fit almost anyone's budget.

Staying true to our brand, we're also a huge advocate for environmental change. In fact, at the beginning of 2023, we hit a milestone for preventing 1 million tons of carbon emission (CO2e) from entering the atmosphere. You can help contribute to a better circular economy when you shop computer or laptop deals on our platform.

 

What to expect when buying a refurbished computer or laptop?


If you're a first time refurbished buyer, you might not be sure what to expect from your purchase. First, understand that your computer or laptop may have external cosmetic flaws depending on the condition you choose (Back Market offers devices of Fair, Good and Excellent quality). However, whatever the condition, any external blemishes will not affect the performance of your computer or laptop and you can expect your device to perform as if it were newly opened directly from the store.

You should also be confident that your computer or laptop is backed by a 1-year warranty, meaning in the rare case that any defects arise (outside of accidental damage) within 12 months of your delivery date, then you're entitled to your choice of a repair, replacement or reimbursement.

 

Computer and laptop warranty and return policy with Back Market


All computer or laptop purchases on Back Market come with free standard shipping, a 1-year warranty, and a 30-day money-back guarantee. We want to make sure you can shop with confidence and find the best computer or laptop for your needs at lower prices.

 

How do I get a refurbished computer at a cheap price?

 

If it´s time to buy a new computer, whether as an essential item or a treat for yourself, here's how, using the Back Market website.

  • Decide on your budget.
  • If you have a favourite brand you can search for this.
  • Select the external condition of the refurbished computer you want to buy.
  • Consider the functionality - screen size, processor power and memory size all make a difference, depending on how you use your computer.
  • Make your selection, choose your payment method and wait for your delivery.

 

Computer and Laptop deals for students


Great news for students shopping for refurbished laptops on Back Market - we offer all college and university students £20 off on all purchases worth £250. You can unlock your student offer deals here. Or if you need help deciding on your next laptop, check out our guide on the best laptops for university.