Best prices, but you do sacrifice some things - overall, quite worth it.
You won't get the fancy extras or fawning service of say, an upscale Harris Teeter or a Fresh Market. BUT, I save $50 every week and it is definitely worth it. They have sales on the items I use most and they offer excellent quality generics. Their generic canned vegetables, sodas, nuts, crackers, cheese, and cereal far exceed generics from "pricier" stores like Lowes or HT and sometimes I prefer them to the national brand.