ya man just try to score them at flea markets and garage sales "not common to find at all" but it happens.

Other than that its Ebay or Roms.

Or maybe put some stuff up for trade to some guys with TGFX16 stuff on this board.

Its feasable to find stuff like Chrono Triggers for 10 bux in the wild then just bay it and buy a couple TGFX games and look at it like you got em for under 10 bux.