Since no one is reimbursing me for travel these days, I tend to be very cheap when making reservations for cars and hotels. I am going to Denver in a few days to tend to my ailing mother and will need a car for a week.
Checking with National Rental Cars (where I am a longtime EEV (Executive Elite VIP)) I noticed that the week was going to total out at $295, not bad for a mid size and on short notice. Being an internet wizard I later (ten minutes) discovered that I had missed a day and was renting for five rather than six days.
No problem, I told myself, I will just go back modify the rez and go on happily. In doing that I found that for an extra day (and still within the week rate) my new fee was $548!!!
Called the Emerald Club hotline and was transferred to the "modification desk" (MD) by a very kind agent. The MD told me that the rate of $548 was the rate at the time I modified my reservation--get over it! (not exactly, but you get the picture).
I then checked the consolidators, and finally made a Costco travel reservation for $175 for the week with Enterprise through the web site.
This morning I went back the National Car website to cancel the earlier one and casually checked on the weely rate which had dropped to $150, all fees included! So I stuck with National and got my dates straight.
It pays to check back almost constantly since apparently rental car companies are like airlines--no price is ever fixed!