I use it enough to justify the $80 cost. I usually get to Death Valley at least twice a year, that's half of it right there.
It really paid off on a three week trip through the Pacific Northwest several years back.
Even if you don't fully use it, the funds go to a great cause.
Then, while at WFO on my way up a dune, I understood. It was like the heavens opened up and I heard the voices of Angels.
Shortly afterward, I heard the voice of God. He said, and I quote, "Dumbass."