Operators manage their maximum exposure per round, and the purchase button complicates that arithmetic. A title with a 50,000x ceiling bought at a 20.00 stake carries a theoretical liability of a million in a single feature, so risk teams set stake caps on purchases, exclude certain high-ceiling games from the buy option, or lower the maximum bet on those titles specifically. The result is that bonus buy slots on a given site may have tighter limits than the same games' ordinary spins, a restriction set by the casino's treasury.