I'm looking for a code to help get a one-way, 24-hour rental cost down in California.

This is to get to and from an airport that is located about 2 hours from where I live. I do one 1-way rental to get to the airport, and another 1-way rental to get back home from the airport about 2 weeks later every year when I fly home for Christmas.

The Avis/Budget rental office is located within close walking distance to my house. BUT they now consistently demand business cards or other ID showing affiliation from anybody using a corporate discount code or any code that gives a significant discount, and they will charge customers full price if they can't cough one up.

Coming back from the airport is not such a big deal as that branch has never questioned any code I've ever used there.

Last year I used a Costco code and I do have a Costco card so that was no problem but this year... the cheapest I can get the cost down to is about $84 + tax each way .... which is extremely expensive, even for a 1-way rental. Coming back from the airport... it's about $15 higher than what I've paid in past years (there's an airport fee). But the rental to the airport is usually "only" $40-ish, not $84.

Can anybody suggest an uncomplicated code that would help reduce the cost, that wouldn't give me insurmountable grief with my neighborhood Avis branch? I've got Costco and Entertainment, but they really aren't bringing the price down much.