I worked retail long enough to know that popular items do sell out during the holidays and become impossible to find anywhere but ebay. That said, I'd be shocked if the bd's weren't back in stock within the next week or so. I mean, were the dvd's ever "unavailable" for significant stretches of time?

IIRC, the last release before the 2011 blu-ray was the 2008 trilogy box set repackaging of the '06 release with the ultra-slim dvd cases. Did that also go out of print prior to 2010 when the blu-rays were first announced?