Why are you buying accounts in bulk? To scam people? To misuse signature campaigns? DTs should auto-neg members offering or trying to make such deals. It is a precursor to most scams perpetrated on this site. Newbies know they lack the reputational credibility to successfully lure people to send fiat or coins first. These sold accounts should be negged and red tagged too. The seller, the buyer and the sold accounts. All of them. Red tagging the sold accounts will render them useless and is a deterrent for future sales of such accounts.

Escrow? 

Payment methods?   How much inventory do you have available?

thanks