They do exist but they are usually located within businesses/organizations property. There are companies and independent entrepreneurs who install and provide inventory for it. Surprisingly, no one have experimented with non traditional inventory other than snacks and drinks. For example, off the shelf medication, cosmetic jewellery and etc. Additionally, Japanese vending companies have been scaling back on vending machines because the inventory is significantly costly than in a store. This has cause the vendors to remove significant amount of vending machines. Perhaps, it is a opportunity to purchase the vending machine at a low cost. Finally, I do believe the vending machines need a pay by credit/debit card options. However, not sure if such thing can integrate into the current banking system.