I had seen a really good rate for a full size car at Avis last week, but did not book it yet. I went back in a couple of days ago and it was up $3.00. Well, I had planned to book it last night and now it is up $50.00!!! Can I take a chance on it going back down like airlines do, or is it probably not going to change now as my dates are just a couple of weeks away. I need one for 8 days, May 3-11.