Great American Savings Pass?

My co-worker's son is participating in a fundraiser where they are selling the Great American Savings Pass. Supposedly there are discounts and rebates available for many things, including Disney World and Disneyland tickets. Trouble is that I can't seem to find a lot of information on the pass on the website without buying one and registering it to login. Has anyone used this pass and is it worth it? I would like to help my friend's son out, but also don't want to waste my money on something that I won't use.