Usually the preorder is a few months before the convention. The price is the same as the con but you have to bring your bange and Id to pick the dolls up. If you don't have id they keep the dolls and resell them so be careful. Usually you can only preorder up to six dolls. I don't recommend trying to sell the dolls in advance if you preorder more then you need because if something goes wrong people will get mad. Just be careful and have fun.