No experience but bought a drink machine, the mech dollar type for $500; a mech snack machine for $100, sited it at my work of 15 staff plus trade counter customers an was pulling $150-200 a week. Was covenient to fill as I worked there.
Even better earnings when one of my staff was on ice or something and downed chocs and coke by the bucket load.
If you find a good site people always buy junk food. Paid for my machines within a couple of months and then pure profit for 5 years. Sold both machines on gumtree for about $1100 total.
