For all-you-can-eat sushi, this place is alright. But on the continuum of sushi restaurants, you could do much better elsewhere in the area. It's comparable to what you'd find in a supermarket: big rice chunks, fairly thin slices of fish, and a pretty unimaginative selection.
Bottom line: if you need to stuff your gullet with questionable sushi for cheap without breaking the bank, look no further than Kuni Sushi. Just keep your expectations really, really low.