Dear ragsell,
The fee is applicable onlu when your selling format is auction and you want to give buyer a chance to buy the product without waiting for the bidding process to end.
It is generally a inidcation of the price at which seller is willing to sell the product.
Normal buy it now is not being charged currently. I hope this will reaming same for the near future.
Cheers, 🙂
Rishabh