Dude, check the nutritional information on the box, particularly serving size and number of servings per box. Multiply to find the number of cookies. Thin Mints and Trefoils give you 40+ per box. Somoas are 12 or 15.
The business lesson these scouts learn is that people will buy extremely over-priced cookies because the scouts are selling them. In the real world, the price-value ratio is just as irrelevant... when the government er taxpayer is paying.
Kids expect people to buy the cookies no matter the cost, simply because GS are selling them. I am equally repulsed by public schools that prostitute students by sending them out on various candy-selling fundraisers. The message is, just have your hand out and people will cough up the cash. The product "sold" is mearly the token love gift given in exchange for the donation.
Socialists-in-training. If this were an honest, moral life lesson it would involve a product or service that has real value, and would teach kids that productivity and good character (not dependancy on a perpetual charity scam) is the key to success.
Alas, these sales are what they are: fund-raisers. Extracting the largest amount of cash from the donors is the goal. Because the end justifies the means, it's okay to use children to do the dirty work.