A wheel placed at the start of a purchased feature adds a layer of variance before the first spin. The player pays a fixed price, spins the wheel, and receives whatever combination of spin count and multiplier it lands on, so two purchases at the same cost can begin as an eight-spin round at 2x and a twenty-spin round at 5x. In bonus buy slots with bonus wheel openings, the price reflects the average across every segment, which means the weaker outcomes are subsidising the premium ones.