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.
"If we can manage to convince the Chinese that Jihadists' testicles are aphrodisiacs, within ten years they'll have disappeared..."