You're a cub scout. I suggest selling it the old-fashioned way because it simply doesn't work on the internet, we just haven't (and probably won't) evolved to the point where average-joe's could sell popcorn online anonymously, especially if it is unofficially and not a business. Again, door to door, sell like that, that's how I did it.
I also think you're being a tad bit lazy simply selling it online, and I'm quite surprised the BSA is doing this.