Do no purchase any game account. He will give you username and password at first let you change the email without giving them money. After you transfer them money like Razer Gold gift card, he will fill out account recovory by providing account creation time, date of birth, security question, and payment method with transaction id. It is useless to have email as verification and protection. I just lost money from it. Just try to be nice to anyone who haven't lost money.
