I have yet to see a pro shop that sells used bows, you can find used bows on ebay and forum classifieds, but personally, Im not a big believer in used compounds, you have no idea what the previous owner did to it, or how they maintained it, and by the time you have it re strung, which i would definitely do when buying used , its really not worth the few $ youll save. I would look for a new low poundage bow 40-50# with adjustable drawlength Ive seen pretty nice ones in the 300-400$ range. have a pro measure your draw and tune it for you.