The "tickets" are a scam.
The way it works is in order to get free tickets, you have to also book a long stay at a hotel at that destination, at very inflated rates. And by long stay, I mean like two weeks. So you're paying say $179/night for the Comfort Inn for two weeks, and you end up spending a lot more than you would have had you just bought tickets the "regular" way. The hotel booking requirement is now always disclosed on an FAQ on the auction. It used to be that they didn't disclose it, but I think they got into trouble with Ebay or something.
But there's a faster way to know that this is a scam. The value of two rt coach tickets anywhere in the world is, depending on restrictions etc, probably at least $4,000. If that's really what was being offered, that's the range in which you'd expect bidding. Since no one bids more than about $50, you know this can't be legit.