Won Kee is one of the larger grocery store/supermarket in Oakland Chinatown. They have a lot of variety and good prices for various Chinese/Asian goods.
The grocery section is huge and the prices are better than Safeway's and Lucky's.
They have a big frozen food section with frozen dim sum, dumplings, frozen meats, etc.
I get a wide range of groceries there including dumplings, meat, produce and I like grabbing different sauces, especially their hot sauces and chili oils.
Their meat/seafood section has a lot of fresh pork and seafood products with a butchering team. I usually get pork loins and ribs there.
Their check-out counter has 5 different lines. They take cash and credit. As an alternative to selling plastic bags, they offer boxes (like at Costco) to transport your items, it probably helps them save people power on collapsing and throwing out boxes.
Run of the mill market. Good selection of products, but a bit pricey and on the occasion I was there, it definitely could have been cleaner and smell better.