Buy.com price alteration

I was searching buy.com for the price on a Maxtor external hard drive. As the page was loading, I saw the price of $180.89. When the page finished loading, however, the price displayed was $220.21. I was able to reproduce this each time I hit F5/refresh. Even though the lower price was displayed for a fraction of a second, I was able to get a screen grab as it was loading... seen here:


Here's a screen grab of the final loaded page:


Evidently, buy.com, in this instance at least, displays a lower price when the product is not in stock. Is anyone actually selling this item for $180.89?