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UK Mac buyback - by post, nationwide

Sell Your Mac Studio M3 Ultra

Sell Mac Studio M3 Ultra for cash in the UK, free insured post, paid in 24 hours
Cash buyback for Mac Studio M3 Ultra anywhere in the UK

The quick answer

We buy the Mac Studio M3 Ultra at the top of the market - 96GB, 256GB and 512GB unified-memory builds, working or broken. Fixed quote by email within 2 working hours, free fully-insured courier collection from your door, and payment by bank transfer within 24 hours of passing inspection.

The M3 Ultra sits one generation behind the current M5 Ultra, still among the strongest local-AI Macs on the used market. A 96GB Studio fetches around £2,500 with us in 2026, a 256GB build around £3,800, and a 512GB machine - the one that runs the biggest local LLMs - up to £4,500 and beyond. Quotes are locked for 14 days.

  • Free insured shipping
  • Paid within 24h of inspection
  • Data wiped to NIST standards
  • Free returns if you decline

Select device

Get your Mac Studio M3 Ultra 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

Mac Studio prices by configuration

Indicative - your emailed quote is the price we pay. Quotes are locked for 14 days.

Prices reviewed

ModelGood conditionFaulty / broken
Mac Studio M5 Ultra (512GB)up to £5,000up to £2,250
Mac Studio M5 Ultra (256GB)up to £4,200up to £1,900
Mac Studio M5 Ultra (96GB)up to £2,800up to £1,260
Mac Studio M5 Maxup to £1,800up to £810
Mac Studio M3 Ultra (512GB)up to £4,500up to £2,050
Mac Studio M3 Ultra (256GB)up to £3,800up to £1,700
Mac Studio M3 Ultra (96GB)up to £2,500up to £1,150
Mac Studio M4 Maxup to £1,500up to £680
Mac Studio M2 Maxup to £1,000up to £450
Mac Studio M1 Maxup to £700up to £320

Different spec or model? It takes two minutes:

Get My Exact Quote

Simple, fast, insured

How it works

Three steps from quote to cash: free insured post, no fees at any point.

  1. 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.

  2. 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.

  3. 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 the M3 Ultra holds its value like no other Mac

Two forces keep M3 Ultra prices high. First, supply is tiny: these are bought by studios, ML engineers and researchers who keep them working for years, so few reach the used market. Second, demand is unusual - the M3 Ultra's up-to-512GB unified memory lets it run large language models locally that no consumer GPU can hold, so AI builders actively hunt used ones. That combination props up resale far above a normal desktop.

The unified-memory tier is the single biggest price lever. Because RAM can't be upgraded after purchase, a 512GB machine is irreplaceable to a local-AI buyer and priced accordingly - the step from 96GB to 512GB can more than double what your Studio is worth.

Even one generation behind, 256GB and 512GB M3 Ultra builds stay scarce. Local-AI buyers who will not stretch to an M5 Ultra still hunt these machines, which is why the floor stays high.

If you are stepping to an M5 Ultra, selling the M3 Ultra now still captures strong money because AI demand for big unified memory did not vanish overnight. The steepest drop already landed at the M5 Ultra launch; from here the slope is gentler.

Selling your Studio when you upgrade to the M5 Ultra

If you're moving to the next Ultra, timing matters less here than on any other Mac - Studios depreciate slowly - but selling before the M5 Ultra ships still captures the M3 Ultra's peak. The demand from AI users who want big unified memory without the newest price keeps the floor high even a generation on.

Everything is priced in the quote form: give the chip, the exact unified memory (96/256/512GB) and storage, and your fixed quote arrives by email within 2 working hours. We arrange free insured courier collection for the Studio, and the insurance covers its full quoted value from your doorstep - important on a machine worth thousands.

Free insured courier collection covers the full quoted value in transit. Pack once using a sturdy box and generous padding; our desktop packing guide covers the technique in a few minutes.

Do you buy faulty or ex-render-farm Studios?

Yes. Heavily-used Studios from render farms, AI clusters and edit suites are exactly the machines we handle - thermal wear, a dead port or a fan fault rarely dents value much, because the logic board and memory are what buyers want. A faulty M3 Ultra still retains roughly 45-50% of working value, which on a 512GB machine is serious money.

Describe the fault in the quote form and you'll get an instant quote - no emailing photos, no waiting days for an assessment. If it won't power on at all, tell us that; even a dead Ultra carries strong parts value.

Ex-render-farm and lab units are welcome. Thermal wear and heavy cycle history rarely wreck the offer when unified memory and the logic board are intact. Describe condition honestly for a fixed figure.

Good to know

Mac Studio M3 Ultra - FAQs

Everything sellers ask us before posting their Mac - answered straight.

How much is a Mac Studio M3 Ultra worth in 2026?

Indicatively: around £2,500 for a 96GB build, £3,800 for 256GB, and up to £4,500 for a 512GB machine - the configuration local-AI users pay most for. Faulty units retain roughly 45-50% of those figures. Your emailed quote is the exact price, locked for 14 days.

Why is the 512GB M3 Ultra worth so much more?

Because unified memory can't be upgraded, and 512GB is the amount that lets a Mac run the largest AI models locally. Few were made, demand from ML builders is high, and no consumer GPU matches it - so the 512GB build commands a large premium over 96GB or 256GB.

How do you collect a Mac Studio?

Free, fully-insured courier collection from your door on a day you choose - no trip to a Post Office. You just need it boxed; our packing guide covers it. The insurance covers the Studio's full quoted value in transit, so the risk is ours, not yours.

Do you buy Studios used hard for AI or rendering?

Absolutely - they're among our most in-demand machines. Heavy use, thermal wear or a minor fault barely moves the price because the memory and board are what buyers want. Describe the condition honestly for an instant quote; a faulty Ultra still fetches thousands.

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 Studio M3 Ultra

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.