why dont you sell these on ebay and get more than your asking price?
That cause some just want bitcoin directly.
Or possible chargeback fraud and paypals restrictive listings that violate policy for having digital currency related products.
I heard plenty that sold, and got returned after mined. Or it would be a scenario of ebay removing the listing something bitcoin related, despite you seeing most listing live.
you kidding ?
ebay has a category for crypto currencies , hardware and mining contracts.
http://www.ebay.com/rpp/coins/Virtual-Currencyim selling contracts and hardware for months without a problem.