New Truck - Master Shield

I just got a new 2011 Dodge Ram 1500!

The dealer is trying to sell me a detailling package called Master Shield that will included Paint Protection,Interior fabric protection,and Rust Inhibitor and Undercoating.

I found a website on it but it really doesn't give much information about warranties etc. http://www.mastershieldonline.com/Home/tabid/36/language/en-US/Default.aspx

Has anbody done this to their vehicle and is it worth it? To do all of the above it is $449.

Thank you,