I'm getting tired of saying this....

On check out the website tells you how much to pay if you don't pay what is listed on that page the site will not begin to process your order, there is no transaction fee included in that price if you choose to send a transaction fee (which speeds up confirmations to get your order in within the time frame the site gives) it is in addition to the price the site charges (transaction fees go to the  miners not to the receiver)