The tiniest bit of research would have revealed that the seller is dealer who sells many bills and they do know better. So don't walk into the same trap the scam artist sets for the uninformed buyer (which ironically, you blame them for walking into!). This guy also happens to be the same mega-weasel selling polymer $20's with offset digits as errors for $68 each (Oh my gosh, there's one in my wallet right now!). It is rare to hear someone take the side of the perpetrator in online fraud.
Where did I say I was taking sides? I merely asked a question and you responded by name-calling. Nowhere in my post did I call anyone a "scam artist" or a "mega-weasel". Yeah, it's rare to hear "someone take the side of the perpetrator in online fraud". Probably because you imagined it. Oh, by the way, notes with offset digits are, in fact, errors, even if just technically. Just because they are common, doesn't change what they are. Seeing someone charge $68 for one is not any different from any listing where items are listed for a price higher than catalogue. And eBay is full of those types of listings. I have to grind my teeth as much as anyone when looking through piles and piles of listings where sellers are trying to hit a home run with every item they offer.
..the only reason I would buy it would be to give negative feedback.
As usual, Fred Squid's post should come with a disclaimer. Kids, don't bid on anything on eBay unless you intend to pay. Being a non-paying bidder doesn't make up for the bad things a few sellers do. Anyhow, eBay has feedback removal tools and other services that make what Fred is advocating... well, just plain stupid.