The few retail stores I have checked out in Provo and Salt Lake were Abercrombie & Fitch, American Eagle, Hollister, Gamestop and EB Games.
Abercrombie caters to rich kids for which I still could not find info the salaries and commission for. From what I have heard about this store, is that some people sometimes browse through the store and later complain about the prices of the merchandise
Hollister is like Abercrombie, but they are more focused on surf and beach inspired apparel that are cheaper that Abercrombie.
American Eagle has some limited openings but might be better as one of their stores is closer to the freeway. Their merchandise are targeted towards the high school and college crowd.
Gamestop & EB Games sound like they are not worth my time.
Even then I still have no ideas about how they pay such as salaries, wages, or commissions or even the quotas