Yes. The average unit price of sushi is about 18 yuan, and the cost is about 9 yuan, so the profit of a sushi is 9 yuan, and selling one yuan is definitely a loss. Sushi is one of Japanese favorite traditional foods. The main ingredient is cold rice seasoned with vinegar (vinegar rice for short), and fish, seafood, vegetables or eggs are used as ingredients. It tastes delicious and is very popular among Japanese people.