Changes in the National Parks Pass
The price on the national parks pass went up sharply several years ago along with a name change from the National Parks Pass to the America the Beautiful Pass. But that was in 2006-2007, so I'm a bit surprised anyone's info would be that out of date. Another thing that changed was the time frame of the pass. It used to be one year from date of first use. Now it is one year from date of purchase. Since there is no discount or other incentive to buy the pass on-line, you're better off just buying it at the first park you come to.
AZBuck