This is eBay's answer to BPF on auction, umm I agree it's as clear as...... 🙄
How is this fee calculated for Auctions when the final selling price isn't known yet?
When you enter a starting bid, we add the Buyer Protection fee so you can see what the buyer's minimum bid amount will be. As the Buyer Protection fee is variable, the fee amount that the buyer actually pays is calculated as part of the final auction selling price.
By including the fee in the buyer's bid price, we're making it simple and transparent so buyers always know what they'll pay and sellers know how much they'll receive.
@sianchris