Buying wow tcg code with wow gold?

ok this guy wants to sell me a loot card code for gold first of all I am wondering if this is even legal or is it a banable offence. second he says its legit because he went through this safetrade email thing here is a copy of the email.


Greetings!

This email is to inform you that Upper Deck and Blizzard\'s brand new collaborated SafeTrade system has been activated and that the code possessed by <Removed> has been successfully entered and verified for the item: \"Reins of the Swift Spectral Tiger.\" Manarath will receive a code beginning with the numbers \"95730\" after trading the previously agreed amount of 3000 gold to <Removed>.

SafeTrade\'s purpose is to ensure that the seller and the buyer have a smooth, insured transaction. As many tickets have been opened in the past pertaining to purchasing fake, unworking Upper Deck Trading Card Game Loot Card codes, we have put forth efforts to increase the legitimacy of these ingame sales.

If you have any problems receiving your item, please reply to this email with your unique SafeTrade transaction ID number: 5890301-93849-684830, and you will receive a message from one of our Game Masters promptly. As tickets can take hours to receive a response, this alternative method allows us to assist you immediately and to prevent any scamming or foul play.

Regards,
<Removed>
Game Master
Blizzard Entertainment

the email was sent from safetrade@blizzard.com

is this legit??? thanks for answers before i throw away alot of gold .