Well judging by theymos, he was selling hacked account, so the price shouldnt be considered as a legit one.
IIRC, that person was trying to sell an entire inventory of accounts for 2
BTC and then eventually tried to sell that legendary account. I believe that he was not able to produce a signed message from that legendary account, so it is reasonable to say that was the hacked account that he was trying to sell.
I don't think his pricing was all that far off from a legit legendary account though, especially one with neutral trust and not on the DefaultTrust network