Either it's fake or that buyer got extremely lucky. http://www.ebay.com/itm/1883-Libert...37?pt=Coins_US_Individual&hash=item2a2cbb26f1 It's a top rated seller with 100% feedback and I was looking through his other items and they all were selling for big money, so it makes me wonder why this coin was listed at $0.99 Buy It Now with free shipping. Strange.
Nothing "strange" about it, sir; the listing clearly states that the "seller has relisted this item or one like this". Below is the clearly-linked relisting. http://www.ebay.com/itm/1883-Libert...D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557
CBD is probably right, but I have seen Buy It Now Morgans for 0.99, maybe because the one in the picture isn't the one you are getting, and you will in fact be getting one in very poor condition.
I bought a 99 cent 1921 Morgan once on eBay. I knew I'd get an email saying, "We meant to list it as an auction, we can't sell it for 99 cents..." But I got it in the mail, sure enough! A few other times, however, I got a message saying they made a mistake in the listing. I have no problem at all with that. I sell too, and I couldn't afford to make that mistake!
They might not have noticed, actually! It was one of those big businesses that had 100,000+ sales. They likely have a few people on staff, shipping dept, etc... It probably went right to the shipping staff and went out without a second thought!