I wouldn't recommend anyone buy this account. 1 it is against stakes ToS to buy and sell an account, but the person could also take someone's money and claim he was hacked. Just level your own account up and not have the worry guys.
Umm, yeah, youre wrong.
You can change the email very easily, I have sold many accounts that the buyers are still using today.
He is telling the truth that account sales against the terms of Stake. Even if there is a way to change the email (which I cant find it), the risk of losing money is on the buyer side. It is even worst when you say that you have sold many accounts, means that you have breached other terms of stake related to multi accounts. It will make the risk for buyer bigger.