Are the prices mentioned correctly or there is some typo ?
Hero - 0.46 while legendary is priced at 0.17 . How come ?
BTW, the price of legendary should be higher than hero.
Also do you care posting signed message as stated by others too ?
Obviously it's a mistake. And he said he can't sign a message. Don't buy the accounts of you'll get red tagged (for good damn reason). These are most likely hacked accounts.