Ok, so looking through my book, I see:
Budget: -$20 off weekly rental+free upgrade
-20% off plus free "double upgrade"
-20%+$25 off with "premium" rental
-20% off plus free single upgrade
-20%off plus third "weekend day" free
Avis:
-25%+$25 off weekly rental intermediate or above
-25%+30 off weekly premium rental
-5th day free
-free weekend day
-free single upgrade
-free double upgrade
Enterprise:
-10% off standard daily rates
-10% off standard weekly rates
-Free upgrade
Alamo:
-Free day on a weekly rental
-$25 off any specialty rental
-Free double upgrade
-$15 off any size vehicle
-$20 off any size vehicle
National Car Rental:
-Free weekend day rental
-$20 off any size vehicle
-$25 off specialty vehicle
-Free day
-Free double-upgrade
Hertz:
-20% off any car class weekly rental
Also:
$5 off
Legoland, CA
25% Sea Life Aquarium, CA
So now you have to figure out what their baseprices are that they are discounting
Happy to send you any/all of the above. If you want any of them, send me a PM and I can mail them to you. We're not going to need a rental car any time in the foreseeable future, and as a PP said, these are good til next June.