Well, as seller who uses PP only I always paid the fees myself and never bothered to complain to the buyers. Only a few paid the fees themselves.
If I would have accepted paypal only, I would have paid the equivalent of at least 7 BTC just for paypal fees (on international sales) so far. In the current goldrush, this might not seem to much. Still, some people work a long time for that kind of money. So why waste it?
@Makhul: Wouldn't it have been easier to just strongly emphasize that the buyer has to pay all paypal fees? Before the buyer accepts paypal as a payment method, you could open up a pop-up window that states his obligation to pay the fees again, so he has to actively agree on this point. You could also link to a paypal-fee calculation site. Again, I've made the experience that the majority of buyers are willing to pay the fees once this is pointed out to them. It's just a matter of how this rule is communicated via bitmarket and the sellers. And how it is enforced if the buyers is unwilling to comply. As discussed before, a rating system would help here, too.
