I was looking around on ebay last night, and I was seeing listings for new 1070s and 1080s that were going for less than $200. Either someone is a complete idiot, or is super rich and giving them away, or it is a scam.
Only thing I wonder about is if it is a scam, which it probably is, why not ask for more money? Even if they asked for $300 that would still ensure a fast sale, and they'd get more money.