I do not know who would sell Lemonade for Bitcoins because I would not do that because I do not think that I would make much money with it at all.
This would be a good thing for kids who want to make money.
I also think that this is not very smart because you cannot make a lot of money with doing this, and its also that not a lot of people will buy it with bitcoins.
This is a useless idea in my eyes.