Someone with very little drawing skill did a sketch of Charlie Brown and Snoopy, signed it as "Schulz" and offered it for sale on eBay. A nine-year-old child could have spotted it as a fraud but apparently there are a lot of eight-year-olds with money because before the listing disappeared it had bids of up to $700 with several days left to go in the auction. I'm guessing it was yanked off because it was reported as a counterfeit but who knows? Maybe it got sold somewhere else for even more.
I'm going to keep mentioning this kind of thing here but keep in mind that fakes are sold every day. The instances I mention are not rare.