They have a online sales site that the girls can get credit for the sales they drive through there, I'm not sure how it works, but I think if you are not local where the girls could deliver the cookies the person ordering would have to pay shipping. So that would make it really an expensive proposition. Family members who might be out of state it might be useful for who want to support their family girls but that would be about it as far as I can tell.
Older people actually enjoy having the girls come by and sell door to door, some have told the girls that they did the very same thing 30 or 40 years ago, those ladies usually buy several boxes. I don't do the order slips to work game, I don't like to have to buy crap from others and I don't want to start that routine.
Shortie did have a lady from Disney who worked in marketing, come by a cookie booth she was working last season and made some very good comments about how Shortie engaged with her and her technique, she said that "There are a lot of Disney employees who could learn a lot from that young lady about customer engagement", she bought three boxes even though she had cookies on order from a scout in Florida.