If you have multiple accounts, and the mods have linked them, then selling one could devalue all of the others. It could also damage your reputation.
That's why sellers need to disclose the name of the account their selling by using the bctpricer site which estimates the price of a certain account depending on it's trust history and post quality and its rank and it provide those without telling anyone the real name of the account.
By the way, from what I've seen on the replies on this post, they'd already explained everything and you've just awaken a 3days ignored post. Hope you won't do it next time.