I doubt eBay would be very happy with trading ebay accounts. As soon as you do this, if you try to scam, or if there is a case against you like a paypal chargeback, they can see that your IP address change, password change, and see that the account owner has changed hands. Also, people put positive feedback on the person who previously owned the account, not you, so all that feedback is kind of useless.
You are right but my intentions are not to scam at all, I just need some visibility cause the visibility of my account gets eaten by all the top sellers of ebay.
Anyway you have just made me think that there is no such market of ebay accounts, is it?