Like cigars, for me, it's a lot about value.
I try to stock Berkley & Jensen Guatemalan Dark Roast beans (2.5 pound bags), $12.95. BJ's is an East Coast chain of food warehouse stores (like Cosco and Sam's) and I grind the beans (very fine) daily.
I stock up when I visit family, since the closest BJ's is 90 minutes away, I'm not a member but my in-laws are and they live near BJ's.
If I run out and can't get to BJ's to restock, there are a couple local coffee roasters who make decent dark roasts at about double the price of my BJ's brand.