Sinclair calculator
Sinclair calculator for sale on Ireland's largest auction and classifieds sites
3367 vintage sinclair - #3367, - £49.95
May have any • Issue described above • Grades including missing - Free postage - New and Used
May have any • Issue described above • Grades including missing - Free postage - New and Used
Sinclair cambridge - sinclair, - £49.99
Sinclair cambridge programmable • Calculator vintage scientific • Instrument from 1970s - Free postage - New and Used
Sinclair cambridge programmable • Calculator vintage scientific • Instrument from 1970s - Free postage - New and Used
Vintage sinclair cambridge - sinclair, - £39.96
Vintage sinclair cambridge • Calculator working scientific • Instrument from united - Free postage - New and Used
Vintage sinclair cambridge • Calculator working scientific • Instrument from united - Free postage - New and Used
Vintage sinclair oxford 100 - vintage, - £49.99
Vintage sinclair oxford • 100 led calculator • Boxed instructions tested - Free postage - New and Used
Vintage sinclair oxford • 100 led calculator • Boxed instructions tested - Free postage - New and Used
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Early sinclair oxford - sinclair, - £21.50
- Free postage - New and Used
- Free postage - New and Used
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48 listings · from £8.46 · avg £89.97
⚠️ These listings were last updated more than 8 days ago.
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Browse 48 sinclair calculator listings currently in our index. Prices range from £8.46 to £469.8, with an average of £89.97. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about sinclair calculator →
Vintage sinclair cambridge - sinclair, - £17.50
This original 1970s • Era sinclair cambridge • Calculator working order - Free postage - New and Used
This original 1970s • Era sinclair cambridge • Calculator working order - Free postage - New and Used
Sinclair enterprise - sinclair, - £99.95
Collectable 1980s sinclair • Enterprise programmable calculator • Finance manual missing - Free postage - New and Used
Collectable 1980s sinclair • Enterprise programmable calculator • Finance manual missing - Free postage - New and Used
3368 vintage sinclair - #3368, - £49.95
Full working order • May have any • Issue described above - Free postage - New and Used
Full working order • May have any • Issue described above - Free postage - New and Used
Sinclair cambridge - sinclair, - £31.99
Happy send more • Images - Free postage - New and Used
Happy send more • Images - Free postage - New and Used
Sinclair cambridge universal - sinclair, - £24.99
Gave wipe over • But would benefit • From deeper clean - Free postage - New and Used
Gave wipe over • But would benefit • From deeper clean - Free postage - New and Used
Sinclair zx81 vintage - zx81, - £24.99
Sinclair zx81 vintage • Computer from united • Kingdom manufactured renowned - Free postage - New and Used
Sinclair zx81 vintage • Computer from united • Kingdom manufactured renowned - Free postage - New and Used
Introducing the sinclair - the, ql - £11.49
Introducing sinclair marshall • Hutchinson computer publishing • Shown - Free postage - New and Used
Introducing sinclair marshall • Hutchinson computer publishing • Shown - Free postage - New and Used
Sinclair scientific calculator - sinclair, - £31.90
This sinclair scientific • Calculator from 1974 • Sought after piece - Free postage - New and Used
This sinclair scientific • Calculator from 1974 • Sought after piece - Free postage - New and Used
Sinclair spectrum 48k - zx, - £100.00
Sinclair spectrum 48k • Serial number 001 • 529833 personal computer - Free postage - New and Used
Sinclair spectrum 48k • Serial number 001 • 529833 personal computer - Free postage - New and Used
Sinclair scientific - sinclair, - £137.98
Sinclair scientific programmable • Calculator vintage electronic • Device that offers - Free postage - New and Used
Sinclair scientific programmable • Calculator vintage electronic • Device that offers - Free postage - New and Used
Sinclair oxford 200 calculator - oxford, - £21.50
This model was • Part sinclair early • 1980s lineup features - Free postage - New and Used
This model was • Part sinclair early • 1980s lineup features - Free postage - New and Used
Sinclair spectrum plus - sinclair, spectrum+ - £84.97
Being sold parts • Not working they • Are untested these - Free postage - New and Used
Being sold parts • Not working they • Are untested these - Free postage - New and Used
Sinclair cambridge memory - sinclair, - £39.99
This dates 1970s • Have popped set • Aaa batteries appears - Free postage - New and Used
This dates 1970s • Have popped set • Aaa batteries appears - Free postage - New and Used
Sinclair scientific - sinclair, - £40.00
Instructions this was • Mum calculator from • 70s 80s when - Free postage - New and Used
Instructions this was • Mum calculator from • 70s 80s when - Free postage - New and Used
Sinclair sovereign calculator - sinclair, - £104.18
- Free postage - New and Used
- Free postage - New and Used
Sinclair spectrum 128k - zx, - £104.69
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Sinclair spectrum 2 - sinclair, 128k - £59.99
Untested selling spares • Repairs returns made • Version - Free postage - New and Used
Untested selling spares • Repairs returns made • Version - Free postage - New and Used
Sinclair zx80 vintage - sinclair, - £465.70
Sinclair zx80 vintage • Computer rare gem • From united kingdom - Free postage - New and Used
Sinclair zx80 vintage • Computer rare gem • From united kingdom - Free postage - New and Used
Sinclair spectrum personal - sinclair, zx - £95.00
Boxed sinclair spectrum • Powers screen shows • But selling untested - Free postage - New and Used
Boxed sinclair spectrum • Powers screen shows • But selling untested - Free postage - New and Used
Sinclair spectrum plus - zx, - £120.29
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Sinclair zx81 home - sinclair, - £34.99
Sinclair zx81 home • Basic manual parts • Untested condition used - Free postage - New and Used
Sinclair zx81 home • Basic manual parts • Untested condition used - Free postage - New and Used
Sinclair cambridge scientific - sinclair, - £26.70
Good condition overall - Free postage - New and Used
Good condition overall - Free postage - New and Used
Rare sinclair cambridge - rare, - £68.30
Sinclair cambridge programmable • Calculator battery not • Used test picture - Free postage - New and Used
Sinclair cambridge programmable • Calculator battery not • Used test picture - Free postage - New and Used
Sinclair spectrum 2 - sinclair, - £155.66
Sinclair spectrum grey • Model 128k boxed • Rastan includes specific - Free postage - New and Used
Sinclair spectrum grey • Model 128k boxed • Rastan includes specific - Free postage - New and Used
Collection sinclair - collection, of - £16.15
This job lot • Bundle collection vintage • Sinclair computer games - Free postage - New and Used
This job lot • Bundle collection vintage • Sinclair computer games - Free postage - New and Used
Spectrum computer games - w/, - £250.00
Fully tested working • Comes after burner • Multi game disk - Free postage - New and Used
Fully tested working • Comes after burner • Multi game disk - Free postage - New and Used
Sinclair cambridge calculator - sinclair, - £57.38
Calculator case instructions • Great condition - Free postage - New and Used
Calculator case instructions • Great condition - Free postage - New and Used
Vintage retro look - vintage, computer - £14.50
Supplied brass hook • Wall hanging can • Free standing shelf - Free postage - New and Used
Supplied brass hook • Wall hanging can • Free standing shelf - Free postage - New and Used
Spectrum pico sinclair - spectrum, - £62.06
Great little machine • Which emulates spectrum • Computer mancave child - Free postage - New and Used
Great little machine • Which emulates spectrum • Computer mancave child - Free postage - New and Used
Sinclair vintage scientific - sinclair, - £94.30
Sinclair vintage scientific • Programmable calculator led • Display rare collectable - Free postage - New and Used
Sinclair vintage scientific • Programmable calculator led • Display rare collectable - Free postage - New and Used
Sinclair spectrum 128k plus - zx, - £62.50
Sinclair spectrum 128k • Plus retro computer • Manufactured united kingdom - Free postage - New and Used
Sinclair spectrum 128k • Plus retro computer • Manufactured united kingdom - Free postage - New and Used
Usborne computer books - computer, - £8.46
Usborne computer books • Better basic good • Condition shown practical - Free postage - New and Used
Usborne computer books • Better basic good • Condition shown practical - Free postage - New and Used
Vintage sinclair scientific - vintage, - £73.50
Genuine working 1974 • Sinclair scientific calculator • That was personal - Free postage - New and Used
Genuine working 1974 • Sinclair scientific calculator • That was personal - Free postage - New and Used
Sinclair zx81 vintage computer - sinclair, - £57.90
Sinclair zx81 vintage • Computer untested - Free postage - New and Used
Sinclair zx81 vintage • Computer untested - Free postage - New and Used
Sinclair sovereign calculator - sinclair, - £312.70
Sinclair sovereign gold • Calculator not tested • May simply need - Free postage - New and Used
Sinclair sovereign gold • Calculator not tested • May simply need - Free postage - New and Used
Sinclair spectrum 128k plus - zx, - £104.69
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Sinclair spectrum 128k plus - spectrum, - £95.00
Sale have this • Sinclair spectrum power • Cable sold seen - Free postage - New and Used
Sale have this • Sinclair spectrum power • Cable sold seen - Free postage - New and Used
Sinclair computer in - computer, - £469.80
- Free postage - New and Used
- Free postage - New and Used
Sinclair spectrum console - sinclair, zx - £49.99
Please see all • Photos fascia has • Come away needs - Free postage - New and Used
Please see all • Photos fascia has • Come away needs - Free postage - New and Used
Spectrum pico red 128k - spectrum, - £38.14
Great little machine • Which emulates spectrum • Computer mancave children - Free postage - New and Used
Great little machine • Which emulates spectrum • Computer mancave children - Free postage - New and Used
Your sinclair magazine - your, 11 - £37.50
Your sinclair magazine • Issues from 1987 • Spectrum computer magazines - Free postage - New and Used
Your sinclair magazine • Issues from 1987 • Spectrum computer magazines - Free postage - New and Used
Sinclair spectrum plus 2b - sinclair, +2b - £120.29
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Black spectrum 128k • Unit very good • Condition tape refurbished - Free postage - New and Used
Spectrum 48k bundle box - bundle, - £229.50
Spectrum 48k bundle • Retro gaming collection • Sale genuine vintage - Free postage - New and Used
Spectrum 48k bundle • Retro gaming collection • Sale genuine vintage - Free postage - New and Used
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Everything you need to know about sinclair calculator
Whether you are looking for a brand-new or second-hand sinclair calculator, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £8.46, while premium listings can reach £469.8 — giving you a wide budget spread to work with. The average price of £89.97 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.