There's a great deal at https://store.discovery.com/detail.php?p=85199&v=discovery_shows_planet-earth#tabs on the 4 disk set of Planet Earth. BluRay - $24.99 and DVD - $19.99
I think I, personally, would love it, but is it for kids too? If you've seen it, let me know what you think.
Re: Discovery - Planet Earth: Good 4 kids?
I know my DS would be scared of some it right now. He is going through a "scaredy" phase, and anything slightly scary or where an animal might be in peril/chasing/growling he says, "Ina change it. It scaring me!"
Keep in mind, though, that he also does this during "America's Funniest Home Videos." *sigh* He's a drama king. lol.
If it's a good deal, it may be worth it to go ahead get it and put it up until later, though. You know?
DD -- 5YO
DS -- 3YO