For what it is, this store is fantastic. I only go here for late-night munchies. They have ready-made food in the back, like packaged salads, sandwiches, dinner plates etc. Just heat-and-eat.
They take every measure to keep costs low. You won't find any fancy decorations, gimmicks, or whatever else normal grocery stores do. Just a clean, blank, open-air supermarket. When I think about it, I appreciate this atmosphere. It feels more honest.
My tip is: don't be in a hurry. The check out lines can be rather slow.
And yeah, the prices are unbeatable. Not even walmart nor costco has lower prices from my observation. If I was buying bulk, I'd probably come here.