Well, no way to know for sure, but a newbie made the same post about this e-bay listing a couple of places on avsforum, and who knows where else. Seems a little fishy.
Didn't get a chance to buy one. Contacted the selller and I managed to get a serial number for one of the subs. Called Outlaw and it checked out fine. Said he will have some more next week. I'll see what happens.