I have a working Famicom Disk System (belt was replaced a few years ago) and about 10-12 disk games (most work, one or two might be dead I'd have to test them all again to make sure) that I'm considering selling. I'll also toss in my homemade adapter that will allow you to use this on a regular 'toaster' NES (two game genies and an adapter). The adapter isn't pretty but it works, I've used it before.
The disk games are:
Kid Icarus
Mario Golf US Course
Green Beret
Bubble Bobble
Bio Miracle Bokutte Upa
Druid
Electrician
Gall Force: Eternal Story
Hero of Babel
Ai Senshi Nicol
Fūun Shaolin Kyo
3-D World Runner
Exciting Soccer: Konami Cup
Yōkai Yashiki
I also have about 8 Famicom carts that I'd like to sell as well (all the early titles that were not released in the US):
Gomoku Narabe Renju (the Japanese board game Gomoku)
Mahjong
Popeye no Eigo Asobi (Popeye English Spelling Game)
Devil World
4 Nin Uchi Mahjong (4 player Mahjong)
F-1 Race
Atlantis no Nazo (Mystery of Atlantis)
And a pirate cart with Jackal on it (ok so this was released in the US)
If anyone is interested shoot me an offer. I really don't know what to ask for these at the moment.