For what's worth. Is it possible to have more than one of the same detectors for sale, yes, been there and done that. Why would anyone sell one on a forum and one on E-bay?? Because you can only sell one on the forum. The forum has no sellers fee and E-bay does. That may be the very reason the seller didn't sell both on E-bay, I know I wouldn't. Last month alone, between listing, selling and Paypal fees, it cost 16% of my sales.
Ok here's my take on this. What throws up a red flag is the identical wording of buying for the kid, and he only used it for two hours. No wonder he gave it up, swing two detectors at the same time takes a lot of coordination. What silverskidmarks, in my opinion, should have done if he had two detectors for sale:
One, totally different photos
Two, not to word it the same way (or not even explain why he was selling it), he may have gotten two for the "kid" but I doubt it.
If the photos were different and the wording was different, no one would have ever connected the two together and everything would have been just fine. If you look at his E-bay feedback, he has sold a few detectors on E-bay with positive feedback. But..... before you lynch him for being a dealer, this has been over the last 5-6 years. heck, I've sold more detectors in the last six month than he has sold in all that time, and unfortunately, I'm not a dealer either.
Just my opinion,
Ron