Amazon.com has Planet earth on Hddvd and Bluray on sale with free 2 day shipping for $66.95. It was $99.98.
http://www.amazon.com/Planet-Earth-...4-8776657?ie=UTF8&s=dvd&qid=1181466230&sr=8-2
http://www.amazon.com/Planet-Earth-...4-8776657?ie=UTF8&s=dvd&qid=1181466230&sr=8-3
http://www.amazon.com/Planet-Earth-...4-8776657?ie=UTF8&s=dvd&qid=1181466230&sr=8-2
http://www.amazon.com/Planet-Earth-...4-8776657?ie=UTF8&s=dvd&qid=1181466230&sr=8-3