What size and lb age? We have a rolan kit, bought for one of my kids years ago, it's stuck in a cupboard somewhere, the other was donated to the archery club. But to be honest, you're better off going to your local archery supplier and seeing what second hand bows they have in for the pull and length to suit.
Probably around the 60" mark would be good but smaller would be fine to, and around 25lb +, the only thing with going to a local archery store is there isn't one near me, and I don't drive so its a pain in ones bottom getting to one.