I dunno if this will help, but I have a PSR-11 (no midi) and I would be willing to part with it for free if someone picks up the tab on shipment. Just give me time to sample that funky miss-hit on one of the sounds.
This toy would be good for a kid to play with, but with no MIDI, its not much more than that. But, hey, I've had it for over 15 years, so it definitely was worth whatever I paid for it.