where do I buy !PolyGameMaster! PCBs

Does anyone know where I could buy a PolyGameMaster mother board and maby some games. I cant buy right now but I would like to know where to get one when I can. I know you can find them on Ebay every now and then. I'll be watching there of course. However if there is a merchant or indivitual selling, that would help too.
Thanks