I know a perfect store(https://www.dkoldies.com/) on US that sells a lot of this stuff and they have huge collection of games for this type of console. I purchase most of my Nintendo games to them. Or do you preferred P2P transaction for this kind of deal.

This is the only store that I know that sells this kind of vintage games except the ebay. They have 120 days warranty for all there items plus points for every purchase. I hope this help.

NES: https://www.dkoldies.com/nintendo-nes/
SNES: https://www.dkoldies.com/super-nintendo/

I’ve got an original NES, two controllers, and zapper. All in working order, plus cords. For games I have Tecmo Super Bowl, double dribble, jeopardy 25th anniversary edition, blades of steel, super Mario bros 3, knight rider, super Mario bros 2, pirates, rampage, bad street brawler, dragon warrior, trog, tecmo bowl, goal, battle chess, back to the future, friday the 13th. I’d be happy to send pictures.