Vending, good business idea or no?

maintenance is something I looked past YES, but I dont think it would be a rediculous expense. As for selling the redbull, I just found out the gym used to sell them $4 a can and did pretty well… Im not sure why but the guy who was doing it stopped and that was the end of that. This being said, $3 is def a good deal, I might even up it to $4