Nope, it *was* a scam... my answer back this afternoon said, "I happen to be in Italy, so I will send you the lens for inspection and you send Amazon the money..."
So there is a new scam lure: high value lenses. The ad was in the "Big Island" section of Hawaii Craig's List but no town was noted, and that, too, made me pause in response. Plus the too-low price...
Beware, all you who lust after big long white glass.