A 10 year old 172R gets about $150 an hour here in the US. Gas is what really drove the cost up. When I go into flying eight years ago I paid $52 an hour wet for a nice 152. AvGas was something like $2.50 a gallon. The other thing is, and you can see this in the thread I started on Cessna prices, is the same basic airplane has tripled in selling price since it was introduced in the 50s.