For every transaction, we get charged a fee by the credit card company and the credit card processor. (This fee is the reason your local corner store might have a $5 or $10 credit card minimum–they won't make enough to cover the fee if you don't buy a certain amount of magazines, or soda, or pencils.)
We pass this fee directly to you without any markup, and we don't make any money on this fee.
Passing this fee to you or your guests lets us continue to offer you the ability to register for cash and honeymoon funds. Without this fee, we'd be losing money on every cash gift, and would have to stop offering this service.
We invite you to compare us to our competitors–we are the only online registry with a single, straightforward fee, and the only online registry that does not mark up our fee in any way to create a profit margin.