Spins Nobody Can Predict in Advance
No rule sheet decides when the rocket tiles appear, so how often the COLLECT symbols land stays open and no session follows a schedule. A return of 96.49%, 96.52% or 96.53% describes a long run of spins, not the next twenty, and the finish of any one session is random.
Which of the three return versions is loaded is printed in the game rules panel, and that panel is the only place worth reading. The figure there belongs to the version actually loaded, and it is worth a look before the first spin on any set of reels.
The x5,000 ceiling sits at the very top of a wide spread and turns up rarely. At A$5 a spin the biggest result is A$25,000 and at A$360 it is A$1,800,000, yet a session can run its course without coming close to either figure, so treat the ceiling as an outside edge.