Realizing that coffee basically costs the same everywhere, give or take a few dollars, North Dakota's The Vault is a self-serve coffee shop and bakery. Payment relies on the honor system as people make their own coffee.
The former bank is equipped with a Keurig K-Cup machine and professional brewer. Customers can pour themselves a cup, check the price board (the menu also includes soft drinks and snacks), tally up their total and pay the bill. There is a slotted honesty box patrons can slip cash into, or they can also pay by check of self-service credit card reader. Other than security cameras, no other incentives are in place to make people pay. In fact, the self-serve coffee shop has found people pay 15% more than the menu price, on average.