All depends on what you got with it and what condition it's in. It sounds like you probably did get a deal, though. Cheapest 30V2 kit with engine at Heliproz is $360, and a decent radio/servo/gyro package will set you back more than another $140.
Check prices on what you got at these two stores for reference...
http://www.heliproz.com
http://www.towerhobbies.com
If it's all in excellent condition, and you paid less than 75% of the new price, I'd call that a deal...