My standard size SUV has gone down almost $150 since I booked it including 3 drops in the last week. It is through Budget through the Costco site. My total with taxes for March 17-24 is now $235
Intermediate SUV through Costco now down to $211 and change for five nights at the end of the month. It's definitely not the best price I've ever found, but at least we're going in the right direction!
You'll need a membership number to create a reservation, but you can check prices without entering a number. I think you'll be quoted the same price either way though.