Don't know about $15 per hour, but I honestly maintain that it is possible to fly in the UK for £15 per hour. It costs me a little more than this due to my choice to base at an expensive airfield in the SE, but if you cut out the massive hangarage costs and fly your socks off it should be possible to get things down below £7 per hour (REALLY!).
If something sounds too good to be true it nomally is...
The catch here is that you have to take (part) ownership of an aircraft which does involve some finite financial risk and plenty of time spent cleaning and maintaining (I have however learned LOADS during my 6 years of ownership). If you don't find the time to fly the bills still have to be paid and the hourly cost do effectivly increase.
Feel free to e-mail me if you need any information on starting or joining such a group.