Vending machines became popular in the late 1800s at railway stations and post offices. These vending machines were dispensing stationary and postcards. Since then vending machines have given self-serve access to many different products like candy, cigarettes, condoms, soap, soda, snacks, and laundry soap...
Big breaks in fees to be paid by marijuana companies mean that delivery will likely become much easier for them and therefore more prevalent in Colorado.