I have quite a few of their tools. The prices should all be the same unless it is used, as Festool sets the prices and it is all shipped from them unless the dealer has it in his stock, and even then the price would still be the same.
I buy most of mine from Bob Marino:
http://www.bobmarinosbesttools.com/
Once you get over the sticker shock their retail system makes a lot of sense. It is all
very well designed and built stuff. I have that saw and extractor and they work great. You might want to consider getting one of the MFT workbenches too as they work very well together as a system.
Be careful - it is a very slippery slope.

Once you get hooked, you have to have more and more.