To the best of my knowledge it's been sold out almost every night. At least I've yet to see it listed on TKTS...and it's been hard to get tickets unless you're talking a ways out.
Incidentally a couple of Saturdays ago when I was buying tickets for my parents and me in July, they WERE selling SRO tix at 11am.
Experience live theater. Experience paintings. Experience books. Live, look and listen like artists! ~ imaginethis
LIVE THAT LESSON!!!!!!