I have had a business account with pay pal for many years now. I liked the convenience for customers and the ability to invoice if they wanted it or to use the shipping features. I have NOT liked the fees that keep going up and up.
After next January though my account will be deactivated until I provide them with permission for their electronic comunications delivery policy. I am still deciding if I want to allow that.
Pay pal is a convenience for the buyer; but for a seller, especially if combined with auction site fees, it means that I have to charge quite a few dollars more for an item.
Pros and cons ...