in short ... if you accepted or sell crypto-currency ... you will be banned (delete items and no refund of the pay for item presentation).
you can sell crypto-currency miner ... but with "real currency" (sic!) ... wire, paypal, etcs ...
Are you sure? I don't think it's been like that for a while. There's plenty of crypto currency for sale. They even allowed it a while back. There's still a big problem with charge backs for digital currency though as they dont cover digital goods and tend to ignore blockchain proof.
I guess they even introduced separate sections dedicated to cryptocurrencies. Also some important person at eBay said that PayPal may have to integrate cryptocurrencies in the future if they catch on and that he owns bitcoins himself!