Originally posted by kev.pride It's what they do when out of stock. Many of the online retailers commonly do this instead of taking down the listing.
Had a guy in Australia (Ebay) recently trying to sell a Pentax A 50/ f2 with buy it now $300 and bids from $200. Said it was "new", which was not a typo - just trying it on.
This happens on eBay because, if you don't want to lose the history of the listing and the position in the research, you can't close the auction and reopen when you have the items again. It is better to set a price that no one wants to pay till the moment that you have the stock again and then fix the price.