oh there’s a pretty sophisticated network for buying arcade cabinets in the US, Sega cabs included. Wired did a writeup on this a couple weeks ago [1]. they really aren’t cheap though. there are a few reasons for the big players to not want these sold on the open market though, like licensing/copyright headaches, which will probably be amplified as people reverse-engineer the game and mod/add their own content.

[1] https://www.wired.com/story/gritty-underground-network-bring...