goirish,check these three sites that I was refered to. Pretty cheap on the wallet! You will need two of each,motors and ESC's. not sure about batteries,still too new to that.
http://lightflightrc.com/HTML/products/SP_30A_ESC.htm
http://www.bidproduct.com/part/Produ...0MOTOR_40.html
http://www.bidproduct.com/part/Produ...BATTERY_2.html