You are mistaken. Investigate.
And Brownies are different.
Actually, you are mistaken. One hundred percent of the net revenue raised through the Girl Scout Cookie Program stays with the local council and troops.
http://www.girlscouts.org/program/gs_cookies/faq.asp
I have a Brownie and a Junior. The only differences are their school grade levels and the color of their uniforms. They both participate in the same activities.