Is this a scam?

Code:
 User PM's me wanting to sell their NX account.
Shojo use to do that all the time.
Password happens to be sinbad(the account he's selling)
Coincidence or not? Shojo sold me accounts with the same password.
Annndddddd, this user claims that he doesn't know the date of birth of the account. Coincidence or scam?
You choose.