I'm guessing you have opened an unpaid item dispute!

Enough of those will affect the buyer - hopefully, IF ebay follow their own rules on the number a person can accumulate but they then only have to open a new account & off they go again.

I keep getting buyer who buy & don't ever make contact, not even a response to a dispute.  
Only had a couple of echecks & they have eventually cleared - guess I was lucky.

I would also assume that paypal would limit or suspend their account but who knows --- in typical ebay/paypal style I tried to search for the answer as I was curious & this was the result ---

"Sorry, our online help is temporarily unavailable. We’re working to fix it right away.  You can use the help links listed or try your search later."

GOOD OLE EBAY/PAYPAL - bump up the fees & reduce the service!!!!
The service has gone down hill badly since 6 May!