I didn't get the info before tonight or I would have said something sooner!
A handful of Tri Deltas (including at least one fellow Alpha Chi Sigma) will be in the March 9, 2012 episode of The Price is Right. All we really know is that they will be in the front row towards the right of the stage and one gets to "Come on down" (as said on my college's Facebook).
The ladies are from the Gamma Pi chapter in Indiana. They made a road trip to the filming over our quarter break last week-ish.
I know nothing about the broadcast time or channel, sorry!