Jordan is 100% right - there are ways to see shows (and a lot of shows) if you're willing to stand, brave lines, try lotteries and do research into discount codes/TDF/etc. I see what can be considered a lot of shows (although probably not on this board) and the most I've paid for ANY ticket in the last two years was $55 for The Book of Mormon. Is it cheap? No, I don't consider $30-$45 (which is about what I spend per ticket) as nothing and I can't do that as often as I'd like but I can pretty much find a way to see whatever I want to see at a price point I can manage.
There's some very different market segments out there for broadway shows. There's the fanatic locals (Jordan, myself a lot of the people on this board) who love the shows, know a lot about every show, know where to find discounts, will stand in a three hour line before the box office opens to rush the latest hit, etc and will jump on a last minute TDF ticket to something if we're free that night or will have an unexpected day off on a Wednesday and do a rush for something playing. Then there's the whitehaired elites, which really don't need an explanation other than yeah, they're probably not going to care too much of a ticket price goes up $20
Then you have the tourists. The people from wherever that aren't really giant fans of theater but they heard from some neighbor who saw Wicked or Lion King that the show was "OMG, so good!" and they're going to make their big vacation into the city to stay at the Marriott Marquis, see a show or two, gawk at Times Square and swing by the Olive Garden for dinner. Even if they're not well-informed their first time out even the slowest among them figure out the TKTS booth and the people handing out discount flyers on the street.
Frankly, if someone insists on buying $300 seats to any show, I'm not going to have any sympathy for them if they have to pay $330 instead.
2010: Next to Normal (May 25), Hair (Jun 9), American Idiot (Sep 10), Bloody Bloody Andrew Jackson (Sep 26), The Scottsboro Boys (Oct 17), Fela! (Nov 14), Next to Normal (Dec 30)
2011: That Championship Season (Feb 15), La Cage Aux Folles (Mar 16), The Book of Mormon (Mar 16), Anything Goes (Mar 30)