These machines seem smaller than the typical vending machine, they're closer to the ones where you'd put in money and get a handful of candy. They're not powered. So they wouldn't be able to accept cards, they take $2, but on the flip side they're easier to move (and steal by the same token I guess) and mechanically simpler. Seems there'd be more locations that these could go in than a large vending machine, which might be an advantage.
Who repairs them is something to find out.
EDIT: This is what they look like I think, they can go on a stand or sit on a counter/table:
