I'm building a website to buy Christmas presents in advance by allowing low income families to pay for them in small payments over a long period of time. So if a father wants to buy a big present for Jimmy (like an Xbox360), they would pay 40 weekly payments and it arrives the week before christmas. My question is I need to do this in a subscription model, and each weekly payment would be pretty small like $5 to $8 (but would increase as the date gets closer to Christmas)... What's the best online authorization service to use (i.e. authorize.net or paypal) for small reoccuring weekly payments? I know the smaller the payment on the credit card, the more these authorization services charge...please help! Thanks in advanced