Price guide / Synths, drum machines and samplers

Roland SP-404 MKII: used price in the UK

What a used Roland SP-404 MKII sells for, what to check and what usually goes wrong. Updated September 2026.

Used, working order	£330 - £450
New price (RRP)	£519
How fast it sells	Sells very fast

About this model

The current SP-404 sampler. Older SP-404, SP-404SX and A models are priced separately and lower.

Check every pad, the knobs and the SD card slot, and make sure the card is included.

What to check before you buy

Every key including velocity
Every knob / slider / encoder
Screen backlight and contrast
Internal battery for patches (older synths - "battery low" on boot)
MIDI / USB / audio outs

Common faults and rough repair costs

Fault	Fix	Rough cost
Dead / sticky / broken keys	Medium - soldering / disassembly / YouTube guide	£10-£60
No power	Medium - soldering / disassembly / YouTube guide	£3-£60
Missing power supply	Easy - DIY, no special tools	£8-£30
Screen / display fault	Hard - specialist repair, usually not worth it	£20-£90
Faulty fader / crossfader	Medium - soldering / disassembly / YouTube guide	£8-£45
Battery	Easy - DIY, no special tools	£10-£40

Selling one on

Real synths (Korg, Roland, Moog, Novation, Arturia, Nord) sell very fast. Home arranger keyboards (Yamaha PSR, Casio CT) are slow and low-margin unless free.

Boxable up to 61 keys; 76/88 key units are collection or expensive courier.

Where this price comes from

This is the range the flipper extension uses for a used Roland SP-404 MKII in working order in the UK. It is a starting point, not a quote: condition, extras, the original box and where you are all move the price, and faulty ones sell for much less.

On a live Marketplace listing, flipper checks that range against real sold prices and live eBay listings for the exact model, works out your profit after fees and flags faults the seller mentions. It is free while in testing. Join the testers.

Buying one? Read What to check before buying a used synth.