How does the Spin and Win works?

While all of the regions on the wheel appear as though they'd be equally likely to land in, there are, in fact, varying odds for each section of the wheel; I can't find these odds anywhere but it's expected that the better the prize, the lower the odds for it. Consequently you'll find that you'll end up spinning the lower rewards very often, and there's not much you can do about it except hope you'll be lucky one day.