Over $300 the provider tends to value her time, environment, & doesn't need a lot of clients to just eat & afford room. Under $300 most likely a motel 6 & the prescription & doctor's youre gonna need next week is gonna run ya hundreds & time & the risk of bait/switch/sting/Rob is higher.
Before the hate comes, there are exceptions to the rules. Not many but they out here problem is for you, if they talented they move up that ladder.