We do not charge you for the transaction fees we inccur when you pay your invoice. We do, however, have to charge you if you want your credit balance paid out. For such payouts we inccur costs 2x, once for the transaction fee when you paid us and then again when we pay you out. We charge a flat fee of 10% + $5 for credit payouts made via paypal. Wire payouts occur a charge of $25. The previous does not apply to any refunds regulated within TOS, refunds within the 7-day money back period or refunds for double payment of invoices.