Presumably you mean Nadaman Komei. It is fusion food (japanese ingredients cooked mostly in French style). A bit like Iron Chef. It isn't expensive at all compared to Kaiseki, if you consider this restaurant very expensive maybe you need to reassess the cost (I think it would be hard to spend over USD 200 per person here). Excellent but very different from Kaiseki.

I had a rather good pseudo-kaiseki meal at the Manhattan hotel a few years ago, very cheap (maybe USD 150 for 10 courses). An interesting hotel to stay at if you like the Japanese interpretation of Louis XIV (and with a bar specializing in scotch whiskey, with about 500 kinds in stock, all at Japanese prices) -- so of course it would be called Manhattan. The genuine places require an introduction and cost is high (USD 500 and up, way up).