http://www.groupon.com/r/uu19254388
Just click the link above, and it is the last option on the right side panel. They are advertising for $135, you get three hours of limousine service (a $270 value) with EPT Limousine and Parking. It says it can be used from 11am - 9pm, and doesn't specify any dates.
I hope this helps some people out, I know it was a royal pain trying to get affordable transportation the night of my wedding.
Good luck!