There's someone on eBay (a seller with 100% positive feedback) selling an oil painting of a nekkid lady and saying it's by Jack Kirby and it's "Said to resemble Jack's wife and the superheroine he created, Big Barda."
The painting is not by Jack — or at least not by the Jack Kirby who created Big Barda. It also doesn't look a thing like either Jack's wife or Big Barda. Starting bid is $500 if you're really, really gullible.