RE: Cheap Sushi
I'd be wary of most cheap sushi offerings in the States, but last summer on a trip to Malaysia, we had great cheap sushi at grocery stores. Demand is higher over there, so even your basic department stores (with grocery sections) like Jusco had a huge refrigerated case of sushi... nigiri as well as maki, and individually wrapped. You made your a la carte choices, took it to the counter where the worker rings up the price, and paid at the cashier. Nigiri ran from 1-3 RM, depending on what fish you chose. That's a little more than a quarter a piece in US dollars. Also, quality was pretty darn good, better than some sushi bars I've had. They had some types of fish we don't often see here... sea ray, for example, and white tuna, both excellent. We stuffed ourselves on cheap sushi and sashimi while there.
Three pictures of the sushi counter and sushi: