Casio keyboard pianos: price by condition
| Condition | Typical |
|---|---|
| New with Tags | £315 (~$420) |
| Like New | £268 (~$357) |
| Good | £205 (~$273) |
| Fair | £142 (~$189) |
| For Parts | £79 (~$105) |
Seller-declared grades, sterling with an approximate US dollar equivalent at £1 ≈ $1.33 (July 2026). What each grade means.
What holds its value across Casio
- Higher-end digital pianos with weighted keys, which are what people learning properly actually need
- Vintage digital watches from the 1980s, which have a genuine collectors’ following
- Keyboards complete with their stand, pedal and power supply, which are model-specific
- Discontinued watch models, which cannot be bought new and are searched by reference
What pulls Casio resale value down
- Entry-level unweighted keyboards, which were inexpensive new and have very little resale value
- Dead or uneven keys on digital pianos, which means dismantling the keybed to fix
- Faded LCD segments on vintage watches, which is the standard failure and is not repairable
- Corroded battery compartments on old watches and keyboards, which spreads to the contacts
Identifying and dating yours
- The model number is on the rear of a keyboard and the caseback of a watch — quote it exactly, since the ranges are enormous
- On a keyboard, play every key and say whether any are dead, uneven or noisy
- On a watch, photograph the display with every segment lit if the model allows it
What lifts any keyboard piano, whatever the label
Portable keyboards depreciate quickly, so the honest range mostly reflects key action and whether every key still works.
- Weighted or semi-weighted key actions
- Every key sounding evenly with no dead notes
- Original stand, pedal and power supply
- Recognised makers with a following among players
And what pulls one down
- Dead or sticking keys, the most common fault
- Failing contacts causing uneven velocity response
- Missing power supply, which is often proprietary
- Unweighted budget keyboards, which sell for very little
Working out what yours is worth
- Play every key individually and listen for dead or uneven notes
- Test the sustain pedal and any expression inputs
- Confirm you have the correct power supply
What to state in the listing
- Number of keys and the action type: weighted, semi-weighted or synth
- Brand, model, and whether it has built-in speakers
- Whether the power supply, sustain pedal and stand are included
- Any dead or sticking keys, and the condition of the controls
Key count and action: “Yamaha P-45 88 Key Weighted Digital Piano”. Those are the two filters buyers apply first. Say whether the power supply is included, because proprietary adapters are expensive and their absence is a real deduction.
Preparing and photographing it
- Count the keys and establish whether the action is weighted, semi-weighted or unweighted synth action.
- Test every key and every control for dead notes, sticking keys and crackling sliders.
- Locate the power supply, which is very often proprietary, and the sustain pedal and stand if you have them.
- The keyboard from above, whole, keys visible
- The control panel and display
- The rear panel showing the ports and power socket
- The power supply, pedal, stand and anything else included
When it sells best, and handing it over
Steady with a strong Christmas lift and a September bump as lessons start. Weighted 88 key instruments sell fastest.
Long and awkward rather than heavy. Postage needs a long box and is expensive; collection is usual and lets the buyer play every key, which is exactly what they want to do.
What buyers ask
Are cheap keyboards worth selling?
Not for much. Unweighted entry-level keyboards were inexpensive new and there are many about. The weighted digital pianos are a different and better market.
Why has my vintage watch display faded?
The LCD degrades with age and is not economically repairable. Photograph the display as it actually looks rather than at an angle that hides missing segments.
How much is a Casio keyboard piano worth?
Roughly £52 to £315 depending on condition, against £50 to £300 for keyboard pianos generally. The identification points above are what move a listing to the top of that range.
What the fees would take elsewhere
At the mid-range £183 for a Casio keyboard piano, against what the commission marketplaces would deduct:
| Platform | Fee | You keep |
|---|---|---|
| Poshmark | −£37 | £146 |
| eBay | −£25 | £158 |
| Mercari | −£18 | £165 |
| Etsy | −£12 | £171 |
| WishThrift | −£0 | £183 |
Seller-side rates verified 26 Jul 2026, percentages only — the per-order and processing charges those platforms add are excluded, so the real gap is wider.
Listing is free and there is no commission — read how to sell a keyboard piano for the title, handover and timing, or the general keyboard piano value guide if yours is not a Casio.
See also: all Casio value guides · value guides by brand · buying a keyboard piano · Music & Instruments · condition grades.