I'm selling my modded C64 with Prophet 64 cartridge on eBay. Also, some other fun C64 musical stuffs:
Prophet 64 Commodore C64 MOS Sid Chip Synth Music
Stereophonic SID 6581 Cartridge for Commodore 64/128
Stereophonic SID 8580 Cartridge for Commodore 64/128
Cynthcart PLUS Incredible...