I've watched the fares from CLT to MIA or FLL (on USAir) for months now and they always are the same but I noticed today that the rates had gone up $10. That doesn't concern me much but the flights Im buying are for around Christmas. Do you think they will change and should I purchase them now? I have thought about using Priceline but don't think it's the best idea for this particular trip. Any help is appreciated.