I am looking to start an ebook/software website where a person can instantly download the product they just bought, my question is, is there any way to make a script that allows the 2nd, 3rd, 4th and so on item to go down in price. EX: Buy 1 item for $5, buy second for $3 (regulary $5), third item for $1 (regular $5)? Please help. Thank you. Also is there a way to make a choice of ebooks/software to choose from to go on a custom cd and for every item they choose the new price of the cd goes up?