I've listed my entire Sega SG-1000/SC-3000 collection today, need to shift as much as possible before moving house at the end of next month...
Lots of nice stuff here:
18 European SG/SC carts (all boxed)
37 Japanese SG-1000 carts (all boxed except 1)
15 SG-1000 MyCards (all boxed except 1)
3 Othello Multivision carts (all boxed)
1 Japanese educational SC-3000 cart (boxed)
1 New Zealand SG-1000 game (boxed)
2 Basic carts (boxed)
4 SC-3000 tapes
Boxed Mark I Japanese SG-1000 console
Loose Yeno SC-3000 computer
Loose SF-7000 Super Control Station
By my reckoning, there's only 6 European carts I'm missing, and between the European & Japanese versions, and the only Sega-made cartridge games I'm missing are Pachinko & Space Slalom.
http://search.ebay.co.uk/_W0QQfrtsZ50QQsassZanagrama