I'm still mystified...

+1 

I generally agree. I will only ask the buyer to pay the paypal fee when I offer payment by check or money order as an option.  for lower cost stuff, I cover the paypal fee. but if a seller is offering a great price then I will still purchase. 

A seller needs to figure paypal fees into the final selling price, which, IMO, should include the fee at no additional charge.  If a buyer wants to negotiate lower, the issue of the fee comes into play.  As Dweller1 pointed out, if you don't like it, don't do it.