I used to sell soda at work. We’d go buy cases when it went on sale and sell it to the people.

A sale in 2000/2001 would cost you ~ $0.20 a can. Stuff not on sale would be a touch over a quarter, so we sold the soda for a quarter. Never made any money, we just didn’t feel like paying $0.75 a can when the company stopped giving out free soda and put in a vending machine.

For the next few years, the sales would be closer to a quarter a can with an occasional sale being closer to 20 cents.

Costco is currently around $0.61 for Diet coke.