Beware and use escrow, i think this account is hacked or stolen why :
The last post is from June 05 2014https://bitcointalk.org/index.php?action=profile;u=39945This user recently woke up from a long period of inactivity.
50$ for just 20$ is to good to be true, there is something fishy if you decide to buy it use escrow and not this autobuy link, @ OP if you are serious and not a scammer i guess you accept escrow correct?