Amazon UK has Planet Earth: Complete BBC Series [Blu-ray] - David
Attenborough for $23.58 shipped to the USA.
Link: http://www.amazon.co.uk/Planet-Earth-Complete-BBC-Blu-ray/dp/B000SKNIWE/ref=sr_1_1?s=dvd&ie=UTF8&qid=1281969285&sr=1-1
Listed price is 17.99 Euros. Add it to your cart and the price falls to 15.
31 Euros. Standard shipping adds 3.08 Euros. Converted, $23.58 US dollars.
And, YES, these play on US players. I ordered mine several months ago from
Amazon UK and they work just fine.