Originally Posted by
djp98374
The $25 for a week is just for one park. Yellowston, Glacier are about the same. Thats $75. Purchasing the $80 annual pass is good for 13 months. If you buy it in early July 2013 its good to the end of July 2014.
Might be missing something here, but the $25 fee for Yellowstone gets you into the Grand Tetons as well (during the same week). So I'm not sure where the $75 figure comes from.