This is not a huge H-Mart with a ton of produce and thirty aisles of stock. That said, for such a tiny store they had a lot of variety. Quite a few frozen and chilled items, as well as your typical kimchis, Korean snacks, instant coffees, sauces, and already made banchan. The food they sell outside the store is also amazing and I highly recommend it.
I moved to the Pittsburgh area in the last year and was needing a Korean grocery. After living in Korea, I find myself in pretty constant need of some kimchi or naengmyun. I was very pleased with Sambok and what they had to offer! Definitely the best Korean grocery I have found in Pittsburgh. If you are coming from a place like NYC this might seem small and disappointing, but I am very happy with it!
Bonus: The couple who were running the store today (I'm assuming the owners?) were super friendly and kind.