Yeah; the cracks at the bottom of the tread makes that tire no good. I wouldn't ride around the block on that tire.
They are phishing for good email address and any other info they can get like cell or home phone numbers. They do it like crazy here, Vegas, and Phoenix areas too. Whenever I see a deal that looks too good to be true I hit the "Prohibit" button which prevents it from showing up. When enough people do the same thing the mods flag it.I just checked the listing and it has been flagged. Guess I was right about it being a scam.