Apart from that I also have all of the following things, which neither of us can manage to put a price to (all PAL versions of these things)
For the megadrive i have (unboxed)
Sonic, pitfall, James pond 3, powermonger, quackshot and castle of illusion
Then boxed...
spiderman, the immortal, super monaco GP (japanese / adapted to work on PAL system) Mega bomberman, Comic zone, lemmings tribes, the legend of galahad, Xmen, Sonic 3d and sonic 2 and speedball 2
Mastersystem unboxed i have...
Sonic, sonic 2, sonic chaos, and chuck rock
Then boxed... laser ghost, pro wrestling, super tennis, james pond 2, prince of persia, teddy boy, AD&D heroes of the lance, Wonder boy 3, Dragon crystal, Rampart, Populous, global gladiators, jurassic park and (sega card) Spy vs Spy
This all comes with a Megadrive, one of the original big Mastersystem convertors (the fancy kind with the pause button and a sega card slot) along with 2 controllers (one of them nice and slinky with 6 buttons, the other the official MD one) , RF cable, and power supply. Both are unboxed.
The Mastersystem convertor has stickers of sonic and stuff on it, because I've had it since I was a fairly young teenager. The Megadrive doesn't have any stickers on it. All of the games ought to work fine, they did last time I played them anyway and they've been stored well since then.
What do you reckon this load of gaming stuff is worth?