I took a chance and booked a "name your own price" last minute flight over priceline. It leaves very early tomorrow morning (6am) . I called Delta to see if it was eligible for the Same Day Standby program and they indicated that no Priceline or Hotwire fares were.
Is this what you are all seeing, or should I try and call back to find a more knowledgable agent?

Cheers, and Happy labor day!