You can get a 50cc class arf for as little as $279. Look at Wildhare, Planes Plus, aerotech, Aeroworks, or even World models - They have some cheap offerings Your biggest expense will be the engine. Even if you buy used, you'll spend $500 there. To save money on servos, you can get by pretty well with non-digitals, like the 945MG's - don't use Karbonite geared servos! Other than that, you'll need the batteries and Rx and some miscellaneous stuff. To buy it all, I'd say you'd spend around $1700+