EDIT 1:

It seems that paypals micropayment system is currently my best option to retaining as much of the $1 as possible. Does anyone know of a way to retain even more of the $1?

ORIGINAL QUESTION:

I need to receive money from users from my webpage. They will only pay very small amounts, i.e. $1 max, but the total will probably go upto $10,000.00. What is the best way to receive this money from a webpage? When I say "the best way", i mean a method of getting the money from where I lose as little of it as possible in terms of fees for receiving the money.