If you think this hobby is expensive you have not been involved with many activities. I am going fishing Saturday, here are the cost;

Fuel for boat= $160
Fuel for tow vehicle=$60
Boat cost= $46,500.00
Tow vehicle cost=$36,700.00
Rods & Reels= 10 combos @ an average cost of $200= $2000
Tackle=$7000.00

Insurance, license, life jackets, boat registration, the list goes on and on.

Compared to other hobbies, flying rc planes is cheap. It may not be cheap for you, but it still is a cheap hobby.