Marukai is an interesting place. Obviously, there are many places around LA that you can go to buy Japanese goods. But I found Marukai to be the most economical, and still retain the high quality that Japanese goods are known for.
Although, Marukai offers mainly pre-packaged goods, like their large selection of cookies/candies, Marukai also has some fresh produces and a fish counter. Also a section of the store is call the dollar store, everything there is just a dollar.
It's an interesting place to visit. Often I leave there with a handful of things I didn't meant to buy when I first go in.