Warehouse Market is a locally owned chain here in the Tulsa metro area... there prices are tough to beat.
Growing up, we only shopped at Warehouse Market. It's about 20% less expensive for the "basics" than most other stores.
But, their selection of specialty items is limited. Nothing in their deli is particularly inspired, and their meat department just stocks the basics (about 15 cuts of beef, 2-3 chicken types, pork chops, and a few fish). Nothing fancy.
But if you're primarly interested in price...this is the way to go!