Up for a bargain is my Kawai K3. I've marked condition as Very Good though that's entirely for aesthetic blemishes. it is 100% fully functional. have tested with midi and all membrane buttons work reliably including the one pictured with damage to the decal over top.
Anyway, this thing is a peculiar synth. It uses digital waveforms but after that is an analog subtractive synth. So the sound is just that - digital crispiness ran through analog circuitry which adds some warmth. If you are into yamaha dx stuff then this thing would be really cool to have. My music is just a bit more 70s oriented so this thing just doesn't fit my sound.