We're a mobile dev house (iOS and Android), and we charge around $60-$80 / hour. www.polymorph.co.za . Sounds like we should get some US clients if $150 / hour is realistic.
iOS: Construct-O-Set : http://itunes.apple.com/za/app/construct-o-set/id373042556?m... Wining and Dining SA : http://itunes.apple.com/za/app/wining-dining-south-africa/id... 22Tracks (Netherlands & Belgium only) : http://itunes.apple.com/nl/app/22tracks/id397202887?mt=8
Android: ExpenZa (only available in South Africa at the moment): https://play.google.com/store/apps/details?id=coza.appositio... 22Tracks (Netherlands & Belgium only) : https://play.google.com/store/apps/details?id=com.fonkmobile...