Take Sushi Bong for what it is. It's a small little family run sushi place who probably does 80% takeout. They do inexpensive sushi that's, well, inexpensive. The sushi selection is pretty small, but that do give you a fair bit for under $10. At under $10 and $6 respectively, their Dynamite and Spider rolls are also a pretty good deal.
If you are looking for super fresh high end fish or quality over quantity, go elsewhere.