The Season 1 of the new Cosmos Spacetime Odyssey with Neil deGrasse Tyson will be released June 10 in 2014 and its pre-orders are discounted. You can now get the Blu-Rays for $30 or the DVD set for $25 at Amazon.com by Amazon herself. Amazon.com offers pre-order price guarantee, so you will pay the lowest price possible (offered at Amazon.com by Amazon herself) on release date. Lots of astro-photography and science!
PS: when the price drops on the website, it may take a few hours before the price of your previously placed pre-order gets adjusted. It will get adjusted, it just doesn't happen immediately.