have a look at this kit, its a flasher 450. i just recieved mine and started the build. its a very nicely built rex v2 clone. the price is good too.
http://www.snhobbies.com/product_inf...roducts_id=172
if you get cheap servo's, a 30a esc and 3500kv motor you can prolly get it in the air for around 300.00, depending on your gyro.....