On my business listings when someone tries to buy something with paypal it adds £5 for shipping even though the items I have listed are with postage included or free shipping. I also have a web site with paypal buttons set to add £5 to orders upto £100. It seems when someone tries to order through ebid when it gets to the paypal checkout stage ebid is linking to paypal as if the ebid order is the same as a paypal payment button.
I have contacted ebid about this and I am currently waiting on a reply, but I thought I would post this in the meantime to see if anyone else can shed some light.