>>10866398Depends, places with official distro for Bandai or other brands will usually adapt the machines to work with the local currency. This very old pic from wikipedia shows yujin machines in HK adapted with scanners for their Octopus card/cash card.
Smaller brands or niche markets may use a game token exchange system like you described.
Bandai Asia also stuffs certain lines into blind boxes instead of capsules so retailers can put them on shelves and bypass the gacha aspect altogether.