if you are in SF area, I suggest going to Pacifica for SUshi. This place is called nippon, its right of of skyline blvd.
http://sanfrancisco.tribe.net/recommenda...75-f6e991c1688d
The srvice is okey, the dcor is awful, but the sushi is so damn cheap, it is def worth it.
I'm usually full after 12-15$ bucks worth of sushi. I doubt you can eat more than 25$ worth of sushi in one sitting (unless it is some kind of specialty stuff).