You can deposit an arbitrary amount of funds into an account, while simultaneously calculating the fees charged by payment processors, so unless you deposit an

You can deposit an arbitrary amount of funds into an account, while simultaneously calculating the fees charged by payment processors, so unless you deposit an odd amount, you'll never have residual funds in your account. Here's what's on the deposit page: We charge a small deposit fee on each deposit. This fee is designed to to cover the following costs we incur: Fees charged to us by third parties to process your payments. Banking and accounting costs. Dealing with payment fraud. Developing and maintaining secure payment infrastructure. To keep this fee from being too large, we also apply an instant rebate that can vary widely by payment method, deposit amount and other factors. For most payments, the deposit fee and instant rebate are not the deciding factors in determining which method to use. However, for extremely small deposits, they can be very important. Honestly, I'd rather be charged a fee once for "funds" (and transparently explained) than for each domain.