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

Refurbished Apple iMac

4.7/5
(13 reviews)
Starting at
£269.00before trade-in
£1,049.00 newSave £780.00
See options
  • 1-year minimum warranty
  • Free delivery on all items
  • Free 30-day returns
  • Awesome customer service

All iMac options

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

320 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)

4.7/5
(13)
Starting at
£269.00
£1,049.00 new
Best Seller
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
£157.00
£1,289.00 new
Best Seller
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
£1,314.00
£1,909.00 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)

Starting at
£499.00
£1,368.00 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)

4.8/5
(4)
Starting at
£867.53
£1,909.00 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
£268.00
£1,149.00 new
iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - HDD 1 TB - 16GB QWERTY - English (UK)

iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - HDD 1 TB - 16GB QWERTY - English (UK)

2.9/5
(2)
Starting at
£449.00
£1,779.00 new
iMac 21,5-inch Retina (Early 2019) Core i7 3,2GHz - HDD 1 TB - 8GB QWERTY - English (UK)

iMac 21,5-inch Retina (Early 2019) Core i7 3,2GHz - HDD 1 TB - 8GB QWERTY - English (UK)

Starting at
£795.00
£2,700.00 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)

4.8/5
(1)
Starting at
£799.00
£3,839.00 new
iMac 21,5-inch Retina (Mid-2017) Core i5 3.0GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch Retina (Mid-2017) Core i5 3.0GHz - HDD 1 TB - 8GB QWERTY - English (US)

4.3/5
(2)
Starting at
£399.00
£1,263.72 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)

3.7/5
(6)
Starting at
£420.25
£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)

4.8/5
(4)
Starting at
£950.00
£1,909.00 new
iMac 24-inch Retina (Early 2021) M1 3.2GHz - SSD 512 GB - 8GB QWERTY - English (UK)

iMac 24-inch Retina (Early 2021) M1 3.2GHz - SSD 512 GB - 8GB QWERTY - English (UK)

Starting at
£1,099.00
£1,769.00 new
iMac 21,5-inch Retina (Mid-2017) Core i5 3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

iMac 21,5-inch Retina (Mid-2017) Core i5 3GHz - SSD 512 GB - 16GB QWERTY - English (UK)

Starting at
£500.00
£1,349.00 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)

Starting at
£199.00
£349.99 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
£348.00
£1,499.00 new
iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - HDD 1 TB - 8GB QWERTY - English (UK)

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

4.6/5
(1)
Starting at
£408.00
£1,695.00 new
iMac 21,5-inch Retina (Early 2019) Core i3 3,6GHz - SSD 1 TB - 8GB QWERTY - English (UK)

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

3.7/5
(6)
Starting at
£446.00
£1,250.00 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
£614.00
£2,329.00 new
iMac 27-inch Retina (2017) Core i7 4,2GHz - SSD 512 GB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (2017) Core i7 4,2GHz - SSD 512 GB - 32GB QWERTY - English (UK)

Starting at
£777.00
£4,499.00 new
iMac 21,5-inch Retina (Early 2019) Core i7 3,2GHz - HDD 1 TB - 32GB QWERTY - English (UK)

iMac 21,5-inch Retina (Early 2019) Core i7 3,2GHz - HDD 1 TB - 32GB QWERTY - English (UK)

Starting at
£781.00
£1,879.66 new
iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 2 TB - 16GB QWERTY - English (UK)

iMac 27-inch Retina (Mid-2017) Core i7 4,2GHz - SSD 2 TB - 16GB QWERTY - English (UK)

Starting at
£811.00
£3,839.00 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
£870.27
£1,669.00 new
iMac 27-inch Retina (Early 2019) Core i9 3,6GHz - SSD 2 TB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (Early 2019) Core i9 3,6GHz - SSD 2 TB - 32GB QWERTY - English (UK)

5/5
(1)
Starting at
£1,171.00
£3,057.60 new
iMac 21,5-inch (Mid-2010) Core i3 3,06GHz - HDD 500 GB - 8GB QWERTY - English (UK)

iMac 21,5-inch (Mid-2010) Core i3 3,06GHz - HDD 500 GB - 8GB QWERTY - English (UK)

Starting at
£99.00
£500.00 new
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 (Late 2015) Core i5 1,6GHz - HDD 1 TB - 8GB QWERTY - English (US)

iMac 21,5-inch (Late 2015) Core i5 1,6GHz - HDD 1 TB - 8GB QWERTY - English (US)

5/5
(1)
Starting at
£249.00
£1,499.00 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
£399.00
£1,025.84 new
iMac 21,5-inch Retina (Mid-2017) Core i5 3.0GHz - HDD 1 TB - 16GB QWERTY - English (UK)

iMac 21,5-inch Retina (Mid-2017) Core i5 3.0GHz - HDD 1 TB - 16GB QWERTY - English (UK)

5/5
(2)
Starting at
£399.00
£1,240.42 new
iMac 27-inch Retina (Late 2015) Core i5 3,2GHz - SSD 32 GB + HDD 1 TB - 32GB QWERTY - English (UK)

iMac 27-inch Retina (Late 2015) Core i5 3,2GHz - SSD 32 GB + HDD 1 TB - 32GB QWERTY - English (UK)

Starting at
£430.00
£2,499.00 new
UK - Black Friday 2024
Take on the new term with the best student laptops 2024
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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

4.1/5

688 verified reviews in the last 12 months.

  • 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 21 December 2023

    iMac 27-inch Retina (Late 2014) Core i7 4GHz - SSD 1 TB - 32GB QWERTY - English (US)
  • 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 16 August 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 8 March 2024

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

    Sabrina F.

    Purchased on the 7 November 2023

    5/5

    Incredible service! Received my computer 2 days later, which was a few days before it was due - so I am beyond happy! Computer looks brand new - as if it was brand new and not refurbished. 100% recommend!

    Reviewed in United Kingdom on 29 November 2023

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

    David 1.

    Purchased on the 15 March 2024

    5/5

    Always wanted an imac. Decided to go with back market and had an excellent experience. The computer showed up promptly after two days in the original apple imac box. On inspection the computer was spotless like new and runs and works perfectly. I'm so happy I chose back market for my purchase.

    Reviewed in United Kingdom on 1 July 2024

    iMac 27-inch (Late 2012) Core i5 2,9GHz - HDD 1 TB - 16GB QWERTY - English (UK)
  • 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 14 November 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 25 October 2024

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

    Paul R.

    Purchased on the 21 February 2024

    4.2/5

    The iMac was very good value at £190 for a 10 year old computer. The screen and keyboard were in good condition but the Mighty Mouse trackball is gunged up and will only scroll down. The screen resolution is a bit blurry compared to the newer models but that's just showing its age. I can only run Macos Catalina which is a bit disappointing as it is a long way backwards from Sonoma. Maybe your specs could be more accurate instead of saying: "will run the highest OS supported" and leaving us to guess what that could be. Overall very good value and I'm still a big fan of Backmarket.

    Reviewed in United Kingdom on 29 March 2024

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

    Gill H.

    Purchased on the 25 February 2024

    5/5

    Very happy with my new purchase! My iMac is like new, even came in what looked like the original packaging. My iphone is going to need replacing next, and I will not be spending un-necessary money or beating the planet up any more by buying a new one after this experience!

    Reviewed in United Kingdom on 11 March 2024

    iMac 24-inch Retina (April 2021) M1 3,2GHz - SSD 512 GB - 8GB QWERTY - English (UK)
  • D

    Deborah T.

    Purchased on the 28 December 2023

    4.2/5

    It works like a dream and will keep me going until apply cheer up and deliver a new 27” imac. Just one thing, what is that silver disc on the front for, it spoils the look of the machine and shows the only sign of wear which is a shame. Price great and delivery very swift.

    Reviewed in United Kingdom on 2 February 2024

    iMac 27-inch Retina (Early 2019) Core i5 3GHz - SSD 32 GB + HDD 1 TB - 16GB QWERTY - English (UK)
See all 688 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.