What do u tink of university student, making money from a vending machine?

so im in first yr right now and i want to buy a vending machine to pay for my every day food, entertainment expences. right now im thinking about buying a vending machine so it can earn me som extra cash,does any one own a vending machine and can they give me som insight, i figure that itll cost me about 2000 bucks to buy one...about 200 buks a months for food..and about 200 buks a month for rental space..im thinkin about putting the vending machine ina highschool, i live in canada and here no one really cares if there are junk machines in schools lol, i need to know if highschools acutally will let me rent space or do they only deal with companies...i live in a new area so there are highschool still being built...so i can plant my vending machine in a new highschool. my months expenses will be about 400 buks i think, do u think i can make more than 400 buks a month off of the machine?