i think if you're guna compare a non-si sedan with something else in about the same category (maybe the mazda3), it'll be roughly the same i believe.
the coupe however will cost a bit more as its 2door, making it a "sports car". damn rx8's have it good

i was debating between a civic and a mazda3 too, but in the end i went for higher resale value, honda reliability, better warranty, better drivability, and jus cuz the civic is simply sexier