it depends on your health. if you have strong and are in good shape, it would be a good idea to do the hamstring because you know then your new acl will be strong. i have heard a cadaver is very painful, so i would try to stay away from that...
yea most people come to ns to get deals right? if everything was the price on ns that it was in stores i dont know why you would buy from people across the country...of course im trying to get them for cheaper.