I was at the Crowne Plaza last week working and they were offering a $139 "Summer Options" rate, though it sounds as they may have sold out already, based on your findings.

The hotel is ok, right on Broadway, a block or so from Times Square, so it's a decent location, however, the rooms are a little dated. You might want to call the Crowne Plaza directly and ask for this rate, it includes a number of bonuses, such as room upgrades, additional points, free breakfast etc.