I am personally experienced with the crap that PayPal pulls. Yeah, for the every-day user, they're fine. But when it comes to merchant services, they're completely terrible. All in all, the least pleasurable experience with any company that I've had, ever. So, I won't participate for or against since PayPal is disused in my life anyway, but I'd recommend being wary of their reputation if you're a merchant.
[emphasis mine]
paypal (and ebay) are seemingly dedicated to the idea that the customer is always wrong.
they make their money exclusively from sellers (i.e., the receivers of transaction benefits) - and since that is the case, their customers are sellers. and yet they will always side with third parties from whom they don't make a dime (buyers).
it's the strangest relationship i've ever seen. i don't understand how it has lasted as long as it has.