I would not be surprised if someone was trying to sell something illicit to another buyer "in the know." It may be risky if you don't actually have the sprues for someone foolish enough to overbid the preferred buyer in this case. Were I to find contraband in a box that my models were supposed to be in, you can bet that it goes to the police along with a report for mail fraud. The add has been eaten by the internet monster, and I don't want to use the way back machine to look it up again. If I remember, they just showed the box for the miniatures, which is pretty common.