High-memory Macs - top of the market
Sell the Mac You Use for AI - for What It's Really Worth
The quick answer
We buy the high-memory Macs used for local AI - Mac Studio M5 Ultra and M5 Max, MacBook Pro M5 Max (up to 128GB) and other big unified-memory machines - for top cash, working or broken. Fixed quote in 2 working hours, free fully-insured collection, paid by bank transfer within 24 hours of inspection.
The reason your AI Mac is worth so much on the used market is the same reason you bought it: unified memory. Because it can't be upgraded after purchase, a 128GB laptop or a 512GB Studio is irreplaceable to the next buyer - an ML engineer running models locally, a studio rendering at scale, a developer who needs on-device compute. Supply is thin, demand is specialist, and prices stay high even a generation on.
- Free insured shipping
- Paid within 24h of inspection
- Data wiped to NIST standards
- Free returns if you decline
Select device
Get your AI Mac quote
See an indicative price before you give us any contact details. Apple Silicon only (M1 and newer). Your fixed quote is emailed within 2 working hours and locked for 14 days.
Step 1 of 5 - Your Mac
Free · No obligation · Fixed quote in 2 working hours
Step 1 of 5: Your Mac
We buy Apple Silicon Macs only - M1-generation and newer (2020 onward), working or broken. We do not buy Intel Macs.
Today's money
What high-memory Macs fetch
Indicative - your emailed quote is the price we pay. Quotes are locked for 14 days.
Prices reviewed
| Model | Good condition | Faulty / broken |
|---|---|---|
| MacBook Pro | Sell yours | |
| MacBook Pro 14" M5 | up to £1,300 | up to £600 |
| MacBook Pro 16" M5 Pro | up to £1,700 | up to £770 |
| MacBook Pro 16" M5 Max | up to £1,900 | up to £860 |
| MacBook Pro 16" M5 Max (128GB) | up to £3,000 | up to £1,350 |
| MacBook Pro 16" M4 Max (128GB) | up to £2,600 | up to £1,170 |
| MacBook Pro 14" M4 | up to £1,100 | up to £500 |
| MacBook Pro 16" M4 Pro | up to £1,450 | up to £650 |
| MacBook Pro 16" M4 Max | up to £1,600 | up to £720 |
| MacBook Pro 14" M3 | up to £900 | up to £400 |
| MacBook Pro 16" M3 Pro | up to £1,150 | up to £520 |
| MacBook Pro 13" M2 | up to £550 | up to £250 |
| MacBook Pro 14" M1 Pro | up to £600 | up to £280 |
| Mac Studio | Sell yours | |
| Mac Studio M5 Ultra (512GB) | up to £5,000 | up to £2,250 |
| Mac Studio M5 Ultra (256GB) | up to £4,200 | up to £1,900 |
| Mac Studio M5 Ultra (96GB) | up to £2,800 | up to £1,260 |
| Mac Studio M5 Max | up to £1,800 | up to £810 |
| Mac Studio M3 Ultra (512GB) | up to £4,500 | up to £2,050 |
| Mac Studio M3 Ultra (256GB) | up to £3,800 | up to £1,700 |
| Mac Studio M3 Ultra (96GB) | up to £2,500 | up to £1,150 |
| Mac Studio M4 Max | up to £1,500 | up to £680 |
| Mac Studio M2 Max | up to £1,000 | up to £450 |
| Mac Studio M1 Max | up to £700 | up to £320 |
Different spec or model? It takes two minutes:
Get My Exact QuoteWhich machine do you have?
The Macs AI builders pay most for
Every one bought for its memory. Pick yours for a spec-specific price, or start a quote for any configuration.
Mac Studio M5 Ultra
Current flagship for local AI - 96GB to 512GB unified memory. Top of the cash table.
Get a quoteMac Studio M5 Max
Current Max-tier Studio for pro workloads without Ultra cost. Strong used demand.
Get a quoteMacBook Pro M5 Max
The current portable AI rig - up to 128GB unified memory. 64GB+ builds command a real premium.
Get a quoteMac Studio M3 Ultra
One-behind Ultra with huge memory still in demand for on-device inference and rendering.
Get a quoteSimple, fast, insured
How it works
Three steps from quote to cash: free insured post, no fees at any point.
Get your quote
Tell us your Mac's model, spec and condition in the two-minute form. We email a fixed quote within 2 working hours, 7 days a week, locked for 14 days.
Post it free
We email a prepaid, fully insured shipping label. Box your Mac, drop it at any Post Office, and we carry the transit risk, not you. Desktops are collected by courier.
Paid within 24 hours
We inspect your Mac on the day it arrives and pay by bank transfer within 24 hours of it passing inspection. Decline a revised quote? We return your Mac free.
Why memory is the whole story on price
On an AI Mac, the unified-memory tier moves the quote more than anything else - more than the chip, the screen or the storage. A 512GB Mac Studio can be worth close to double a 96GB one; a 128GB MacBook Pro M4 Max can carry a £700+ premium over the 36GB build. That is because memory is what holds a large model in RAM, and it's the one thing a buyer can never add later. When you fill in the quote form, give us the exact unified memory - it's the single most important number for your price.
High-capacity storage matters too. AI datasets and model weights fill drives fast, so 2TB, 4TB and 8TB SSDs add real money on top. And because these machines are bought to be worked hard, honest wear rarely costs you much - the board and memory are what the next owner wants. If yours is faulty, from a decommissioned cluster, or won't power on, we still quote it instantly: sell a broken Mac the same way.
Upgrading to a bigger rig? See the dedicated pages to sell a Mac Studio M5 Ultra, M5 Max, M3 Ultra, MacBook Pro M5 Max or M4 Max, or compare cash against the alternatives in our MacBook trade-in comparison.
Good to know
AI Mac selling - FAQs
Everything sellers ask us before posting their Mac - answered straight.
Which Macs count as 'AI Macs' and what are they worth?
The machines with large unified memory: Mac Studio M5 Ultra and M5 Max (high GB configs), MacBook Pro M5 Max (up to 128GB), and one-behind Ultras. Indicatively they fetch £1,600 to £5,000+ with us in 2026, because their memory runs large AI models locally - the exact figure is in your emailed quote.
Why do high-memory Macs hold value so well?
Unified memory is fixed at purchase and can't be added later, so a 128GB or 512GB machine is irreplaceable to an AI buyer. Demand from ML engineers who run models locally is high and supply is thin, which keeps resale far above a normal Mac - even a generation on.
Do you buy Macs used hard for AI training or rendering?
Yes - they're among our most wanted machines. Heavy use, thermal wear or a minor fault barely dents the price, because the board and memory are what buyers pay for. Describe the condition for an instant quote; a faulty high-memory Mac still fetches serious money.
How do you handle a machine worth thousands in transit?
Free, fully-insured shipping or courier collection, covering the full quoted value from your door to our workshop. We carry the transit risk, not you - so if anything happened on the way, you'd still be paid in full. Payment lands within 24 hours of inspection.
Can I sell before upgrading to an M5 Ultra or M5 Max?
Yes, and it's the smart time. High-memory Macs depreciate slowly, but selling while yours is current still captures the most. Your quote is locked for 14 days, so you can line up your next machine and post the old one once it arrives.
About the buyer
What is SellMacBooks?
SellMacBooks is a UK buy-back service for Apple computers only. We have no shops and no drop-in counter: every sale runs by post, anywhere in the country. You describe your Mac, we email a fixed quote within 2 working hours, you post it free on a fully insured label, and payment leaves by bank transfer within 24 hours of the machine passing inspection.
We buy Apple Silicon Macs only - M1-generation and newer (2020 onward), working or broken. We do not buy Intel Macs. Macs are the only thing we handle, so the person pricing yours knows what the model is worth this month rather than reading it off a generic gadget table. See how it works or read about us.
The inspection
Everything we check before quoting a Mac for AI work
Your quote is built from what you tell us, and the bench check on arrival exists to confirm that description rather than renegotiate it. Here is exactly what we look at:
- Power-on and a clean boot to the desktop
- Screen: cracks, dead pixels, backlight and marks
- Chassis and cosmetics: dents, deep scratches, worn palm rests
- Battery health percentage and cycle count
- Keyboard, trackpad, speakers and every port
- Storage size, memory and chip against the spec you quoted
- Find My / Activation Lock signed out (we cannot buy a locked Mac)
- Accessories included, such as the original charger
The quoted price is fixed and locked for 14 days. If the machine differs from your description, you get photos and a plain explanation with a revised offer - accept it, or decline and we return the Mac free and insured. Full detail on the three grades is on our grading page.
Versus the alternatives
How we compare
Selling a Mac in the UK usually comes down to a big trade-in site, a marketplace listing, or a specialist buyer like us. The differences that cost sellers money are these:
- Big trade-in sites can keep you waiting days after delivery. We pay within 24 hours of your Mac passing inspection.
- eBay takes roughly 14% in fees, plus postage, plus return and scam risk. Our quote is the amount that lands in your bank.
- Some buyers put the courier damage risk on you in their small print. Our label is insured at our expense, both ways.
- Return fees for declining a revised offer are common in this market. Ours are always free, both ways, whatever inspection finds.
- Most quotes quietly expire or float with the market. Yours is locked for 14 days.
The longer version, option by option, is in our guide to the best place to sell a MacBook in the UK and our MacBook trade-in comparison.