This is located in a good location one block off Rive Gauche. The sushi train is entertaining, but the portions are very small and very expensive. Each plate has about two pieces of a roll or two pieces of sushi, and can cost between $5-$10. There is a happy hour after 7PM when the sushi is half price, which is still expensive.
Normal price is just plain silly. During happy hour, the average person will get 7-10 plates, and spend maybe $30-$40. Don't bother during non happy hours.