There were something like 600 tickets left when the event closed on Stubhub, although the prices didn't crash. One set at $13.50 and everything else was $25 and up. Still good last minute deals, but not the under $10 I would expect with that number of tix left.
Key to this game is to not play down to their level; they should be flying high after Tuesday's win, and if they carry that emotion over to this game, they win easily 4-2. If they come out coasting because they see it as no big deal because it's a weak opponent, this could get very ugly very quickly.