I'm hearing a few wild stories about the current rates people are getting for mobile contracts out there currently. Whereas PHP developers are getting maybe $50 per hour (USD), most other things are seeing around $70-80 per hour - I hear "normal" rate for IOS currently is around $100-150 per hour for local contractors/freelancers. I've even heard of "top" IOS developers in Silicon Valley getting as high as $250 per hour.

Are these numbers accurate?