Yeah sad that DL is hosing people on the car rentals. I ended up booking through Expedia for an Avis rental since I could put in a CDP as it 25% less than what was being shown on the delta cars site.

Whatever hidden 'CDP' Delta is using on their site for rentals is some wonky version that jacks up rates... since if I use the normal DL CDP direct through Hertz, Avis, or even Expedia it comes out much lower.