Just because the OS costs more does not necisarily mean they actually have bigger profit margins, they are built at different labor rates and they pay the most for advertizing. Besides OS doesn't set street price, how much goes to the LHS is completely up to the LHS, and the consumers.

I don't know shops on your area , but i am quite sure my shop cares about what they sell. they know some of us like the Irvines, and a few other brands that are hard to get, yet they almost always have them in stock.