hi- does anyone know of a customization / module that has been developed that will allow users to buy "download credits"? For example, a user buys 10 download credits, and when he/she downloads an item, the script subtracts 1 credit from his/her account (or it subtracts the number of credits that the download is worth.) This website has the exacts functionality that I am looking for: www.istockphoto.com If I end up developin this customization myself, would anyone else be interested in it? Thanks! Greg