Go on-line and open;
Under the "yellow" urgent bar, type in the zip code where you work. A Sacto Gas Prices website opens up. A list of the lowest "reported" gas stations in Sacramento will appear. If you need something more specific on your route to and from work, on the left side of that same page on-line, under a "red" bar that says "search for gas prices" under "area" click in the specific city you work in. Then click "Search now!" You'll get a tighter list. You can even participate and become a "cheapest gas price" reporter yourself.
I hope this helps you.