I knew a guy who did this with chocolate. He used to get a candy bar from the vending machine at work like every day, but something happened, I think he either got a health scare or saw a documentary or maybe a combo of things and was like, "Gotta stop eating these shitty chocolate bars every day."

Started setting aside the coins he was using at the vending machine and at the end of the week would get a bar from a higher quality brand at the grocery store. Learned he really liked dark chocolate. Started upgrading to nicer and nicer chocolate. Last I heard from him he was going to some of the bougie chocolate shops downtown every few months.