A typical legal rationale for protecting the consumer is based on the notion of policing market failures and inefficiencies, such as inequalities of bargaining power between a consumer and a business.
It sounds kind of expensive when you first check out, but it's actually pretty cheap if you consider it. Take something standard like a Philly roll (nori, salmon, cream cheese, cucumber, avocado). At Maki it will cost you $6, but the roll is pretty fat and you get 10 pieces. Most sushi bars charge around $5 and give you 6-8 pieces.
The California roll is a maki-zushi (roll), a kind of sushi, usually made inside-out, containing cucumber, imitation crab stick, and avocado. Sometimes crab salad is substituted for the crab stick, and often the outer layer of rice (in an inside-out roll) is sprinkled with toasted sesame seeds or tobiko. Must-Haves: Without these you don't have sushi. Nori: This is what makes sushi sushi. It's seaweed but don't think about that. It comes in square sheets. I suggest starting off with a whole or 3/4 sheet for each roll. With practice you should be able to get it down to 1/2 sheet per roll. Rice: Short grained and short grained only please. It's not always easy to find but short grain rice does exist.