Session outcomes and the x10,000 ceiling
Choose a bet on Gates of Hades knowing that a session may pass without the bonus round. How often the bonus round comes is not known in advance. The result of one session is random, whatever RTP version applies to the game.
Check the game rules before you commit to a bet, because the RTP version in play is shown only there. Each version appears in the table on this page with its return in money. Read the rules first, then compare the rows before you choose a bet.
Treat the maximum win as a ceiling, not a target, since Gates of Hades caps wins at x10,000 the bet. Nothing in the rules tells you when a session will approach that cap, and it may never happen in yours.