Since I’m not a professional vendor, if I agree a price of £55 I’d expect £55 and for the buyer to fund their own protection.
Disagree, as a seller you hold a Paypal account and there is a cost to this (and the fee’s are a pretty basic part of the T&C’s). You are basically accepting card payments which increases the chance of a sale and reduces hassle. Card Payments would cost you money whichever way you do it. Plus it means an end to cashing cheques, whether you post them off, or go in to the bank, and subsequently having to check whether its cleared before posting items.
As a buyer, you are just clicking a button to pay for an item, you don’t need an account so why should they be liable to pay anything (and why would you want to discourage a purchase by trying to pass on the fee – I bit like corner shops that sting you for using a card)