There is always a risk, but there are also many good used bows on ebay, especially if you're not looking at anything too old. The biggest problem usually arises from a novice choosing what to get. You not only have to know what ATA, brace height and draw weight is best for you, but you also have to know the correct draw length, how to adjust and tune the bow or be willing to pay a bow shop to help you out there. You'll probably need a new string and cable (just for peace of mind), and it would be a good idea to have a bow shop check the axels and make sure the bow isn't dangerous to shoot. Also, bow warranties are not transferable, so if something goes wrong, you have to pay to fix it.

Used bow purchases can work out for some, especially the experienced archer who can work on their own bows.