Can't imagine buying a PayPal account will work smoothly. You're basically saying, "I'll give you a few bucks if you give me unrestricted access to your bank account to sell drugs and launder money in your name." Nobody is going to do that, so the accounts on the market are either just going to be scams or will get quickly banned.
Check out the Silk Road sites that run encrypted through the encrypted TOR network and trade through bitcoins. The main one got taken down, but there are hundred of lookalikes that basically do the same thing. They're like an ebay but completely anonymous.. even have to download a special browser just to access them. Should be able to sell your drugs/pipes more securely there.