We don't know. People are on both sides and the arguments are equally valid; they will most certainly not be cheaper though. As with all Apple products, be prepared to spend more than usual and let it be a happy surprise if it less.
I'm really hoping for a 1300 price for the base model, but I can see it starting at 1500. I just hope it comes with plenty of storage and ram if they increase the price. My iPhone 6 has 128 so even having 256 would seem small for my personal computer.