Well, some is junk and some is name-brand. This is an anomaly I didn't know of until I came to Brooklyn - the sort of "catch-all" supply store. Kind of like a Duane Reed or something, but with more discounts and a wider selection of odd things. Come to think of it, it's sort of like a cross between a hardware store, a Duane Reade, and a dollar store.
Depending on what kind of quality you want, it may not be the place. It has tons of kitchen tools and the like, but they're going to be cheap (price AND quality) versions; you're not likely to find a OXO spatula in this place. But if you want a can opener and don't really care if it's space-age rubber, you can find one here, and it won't cost much.
It's a perfect place to go if you're a young person moving into your first NY apartment and need all those little home necessities on a budget. Small garbage cans, kitchen utensils, cleaning supplies - it's all here. Plus the odd, entertaining item you don't usually come across (eg - I once recall seeing something like a pantyhose hanger in there).
So, if you are looking for something home-y (kitchen sink food catcher, dish drainer, paper towels, non-"designer" beauty products, humidifiers, crock pots, etc etc) - go here. It's a good place to start.