He's not entirely unknown here, so I wouldn't assume it's a scam. Maybe he's just out of town for some reason.

As long as you didn't pay and he didn't relist it, it's probably worth waiting for. Good luck.

Now that you mention it, I bet my eBay contact info is out of date too. I set up the account 7 years ago and just forget those details. Could be the same with your seller.