Interesting DP - A month back or so I got an invite to make a small business account (have my own AWD number now). My small business is an LLC just for me. I had an upcoming reservation with Avis and also Enterprise.

My rep (I got a rep, lol) called me and asked to get more info about my business. I explained I had an upcoming reservation with both Enterprise (for a Tahoe for $425) and Avis (for an Edge for $450). I said it wasn't a competitive rate, and somehow my rep managed to get my rate down to $328!! Said to email him directly if I need a car rental in the future and he would get a competitive rate.

Highly recommend signing up your "small business"