by Zach Raffio. @zachraffio, NEW YORK, NY - Broadway ticket sales have hit historic lows in recent months, with many shows playing to half-full houses and earning less-than-breakeven average ticket prices. We went to our neighborhood printer Bill’s Sign Shop (#ShopLocal) to have a big chart made so that we could take a better look at the numbers, but then it hit us: we could just turn that chart upside down, and the numbers would actually be pretty good. You see, the chart -