If they don't have it, you (and your pet) don't need it.
I needed to switch my dog to a Limited Ingredient Food and other stores had very limited options for me to choose from. Mounds had all of the brands I'd researched online. They also have more treats and more toys than I've ever seen and their prices are on par with big box pet stores, maybe even lower on some things. And you get a Mounds candy bar when you check out!
It doesn't have the "boutique" feel of say Tabby & Jack's, but their selection, service and prices can't be beat.