The great thing is that it will set you back just about $100 but you get great seats confirmed before you go. I have booked for Jersey Boys, Avenue Q and Motown.
d) Sight-seeing - If its your first couple of times, you need not take the tour packges which are really moving packs of sardines through the city in an unforgiving manner. Always take free and easy then buy packages beforehand. The best site is aviator. As you can see, they are reasonably priced.