system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do most goods have relatively stable prices, while gasoline fluctuates on a daily basis?
gpt
Mostly because gasstations decided it's worth the effort to inform people of daily price changes.

Fuel supply and demand change a lot, so with a constant price it would have to be pretty high to prevent the risk of selling at a loss for gasstations.

With other goods supply and demand are very stable, and the effort to inform people about the daily price outweights the gains for the seller. (Imagine a grocery store would keep up some digital board with all the current daily vegetable rates instead of printing a pricetag)