The Limits of Any Preview
Deciding how long to play, you cannot plan around the bonus round, because nothing states when it arrives. Ten free spins might open on your first press or stay away for a whole evening. A single session is random, and the return figure describes a long run of play, not the money in front of you tonight.
Choosing where to spin, check the game rules screen before you stake anything: the return percentage in use is printed there, and only that panel ties the running version to this game. Comparisons between sites tell you nothing about the round you are about to start.
Chasing the ceiling, treat A$200,000 at A$10 as the top of the scale rather than a target. Hitting it needs the collector work and a run of big fish values to line up together, and most sessions end far below. A ceiling is the edge of the paytable, not an expectation.