The teenage businessman
If we were still in high school, then this “life hack” would be worth trying. The basic premise is to discover what students want out of the vending machines, buy those items affordably in bulk from Costco, and sell them back to classmates for less than the vending machine prices.
Of course, you’ll have to exercise caution when selling. Only sell to people who earn your trust and never to teachers, as they are more than likely to tell on you even though what you’re doing is for the good of the school. According to the original poster, he makes over $50 in profits daily- that’s $350 per week!