Jet Blue is the only non-stop from Boston for us in January. They have a policy that they always start with the lowest fares and the prices just go up from there.
As a result, the day their schedule expanded to include our timeshare weeks, I booked at $727. A couple of weeks later the price dropped $50 so I called and they gave me a Jet Blue credit for the difference. Not a refund, but a credit I can use for another flight. I'm still watching the prices.