I found this lovely IN BOX 3D controller in a random flea market store on main street in the city I just moved to. This was actually in the storage room in the back. I asked the owner if they had any other video games stuff.
There are not that many thrift stores, pawn shops, flea markets or such around here. I am glad I can still find Sega stuff though.
It also came with a bunch of promotions for Saturn games.