If there’s a Winco near you, they have good-might-be-stretch-but-significantly-better-than-Folgers coffee in their bulk section that you can grind in store. It’s fairly cheap - no idea if it’s a better or worse deal than Folgers. Decent variety of strengths and flavors.

If you don’t have a Winco nearby, you might have something similar- on a scale of [normal grocery store] to [Costco], Winco is kind of right in the middle; I’m guessing it’s not the only chain that’s like that, and that similar stores will have a similar inventory.