If you really want to keep costs down, you might check out the Hobbico Flyzone Ventura ARF:

http://www2.towerhobbies.com/cgi-bin...?&I=LXJTK4&P=7

It includes the airframe, motor, battery, esc, 2 spinners, 2 props, and even an instructional video all for $49.99

Add your transmitter, receiver, and two mini servos and you're ready to fly... oh, as long as you can charge the battery.

An added bonus? Spare parts are readily available through Tower Hobbies or most any hobby store in the country.