As most of tires and engines are coming from/made in Europe and Asia. Dont expect prices to go down any time soon.
Pretty soon the dollar will be worth as much the peso!
Just check out 5 year trend of euro and yen versus dollar. Dont need a degree in economics to see that rc racing is going to continue to get more expensive.
http://www.google.com//finance?chdnp...:USDEUR&ntsp=0
Onroad vs Offroad prices has more to do with volume and what market will tolerate.
Good luck selling a 700$ offroad engine but I bet you could sell a 2000$ onroad engine.