If you are looking for a place that has affordable sushi in Concord, Sushi Momoyama is a great place to check out if you are in the neighborhood. During the pandemic, they were only available for takeout but now there is indoor dining. It gets busy during dinner time so make sure to come early! Before the pandemic, the wait for two people was around an hour, and there's not a lot of room to wait beside the front so I would assume it is probably busier now with the limited seating. There's a parking lot outside, but the plaza is quite sketchy so I would recommend hiding or keeping your belongings with you. Sushi Momyama has an extensive menu with classic Japanese items like sushi rolls, rice plates, nigiri, sashimi, appetizers, and more. I ordered the beef sukiyaki and the meal usually comes with a complimentary side of salad and miso soup. Each time I've been here, the chef gave us a complementary roll for free before the pandemic although I am not sure if they are still doing this now. It was usually test rolls they were thinking of adding to the menu which is very kind of them. The ambiance is pretty chill and the food takes a while to come out but it is understandable since everyone is doing the best they can as they adjust to the current situations.
Beef sukiyaki: This is my usual order and it comes in an extremely hot clay pot filled with tons of sliced beef and other vegetables. The mushrooms are extremely juicy and flavorful and the assortment of broccoli, zucchini, cabbage, firm tofu, onions, and glass noodles are tasty when it is cooked in the broth. It also comes with a side of rice. The soup is hearty and beefy and the portions are enough for two people. I would highly recommend sharing this with another person and ordering a roll and this is more than enough to fill you up. It was also reasonably priced and not too over expensive.
Overall, I only come here when I am visiting the Concord area to satisfy my Japanese food cravings. With the extensive sushi roll selection and their specials, Sushi Momoyama is a steal for their price and the amount of food you get. Make sure to come 30 minutes before they close since they stop serving around that time.