If money is tight, this is about as cheap as you can get into this hobby.
http://www3.towerhobbies.com/cgi-bin...I=LXCXF4**&P=0
And to help keep you safe.
http://www3.towerhobbies.com/cgi-bin...?&I=LXL419&P=0
Before you order, Join the Super Saver club. Then in a day or two Tower will send you an e-mail with coupon codes that can drop up to $60 off of your order as well as freeshipping.