What about a convenience store? There's 7/11 that is utilizing the use of cryptocurrency by directly selling it to users in their counters. Eventually, as market adoption increases, I will not be surprised if 7/11 sells their products in cryptocurrency as well. One of the main reason why this is not implemented yet is because of the taxes needed to be assigned on each of the product, there's still no regulatory that is responsible to manage the suggested retail price of products in relation to its tax.