Affordability has nothing to do with it. It's a matter of getting the best deal possible if it means waiting a few days vs. weighing the possibility that the vehicle we are interested in might be sold by then. In other words, if x rebate and/or better financing will be available is it worth it to me to wait and risk having to locate or find a similar vehicle or just buy now because it will be the same or not worth it to me to wait.