"cheap" is relative for this show. If you're in the area, I would check the box office for cancelations (not the line), but they can tell you if they have any tickets for upcoming days, week, month, etc. I was able to randomly get 2nd row orch for face value by going the Friday before a Tuesday show. Aim for weekdays vs. weekends. Stubhub or tickpick for last minute ticket drops day of. I was able to grab some seats last min 45mins or so before a show, and then upgrade to better seats after intermission (I asked usher before moving).