My friend's dad almost got taken for much more. Sold a couple of old range rovers on craigslist. wanted 8,000 for the pair, guy sent him a check for 18,000. When he called the guy, he said he didn't have the ability to cut another check, but for his trouble, he could keep an extra 1000, and just give the $9,000 leftover and the trucks to his "courier"... old trick now, but apparently a bunch of people got hit with that one.