4 bucks from campmor.com. It works.
I tried Fog Tech and find this to be far better and cheaper. FT has to be put on precisely in order to keep from streaking and it will smudge if touched. CC is a sort of waxy stuff that turns "liquidy" with the heat of your finger tip. Don't leave it in extreme heat, such as a car on a summer day, it ruins the integrity of the mixture and seperates it causing it to not work as well. Other than than, I've found nothing better.