apparently paypal and ebay have taken it upon themselves to label the eBook sellers as a 'high risk', which means they suspend the accounts for them in a heartbeat if they find even a dispute or two, even with satisfied customers along with positive feedback.
i unfortunately have fallen into that 'black hole', i had a dispute against me and a dispute that I filed against another seller, and apparently Paypal has closed my account because its too many disputes. I have even given up selling eBooks too, but paypal seems to be a pain in the @ss about it.
I was frauded on Alibaba by a seller who tricked me into sending money to a specific paypal account and then when I wanted a refund they tricked someone else into sending me money. :( so i am pretty much stuck because of that one seller on Alibaba :(. god i hate people sometimes