Festool has a new promotion going on where if you buy a saw or router between August 1 2018 through October 31 2018 and then send in an old tool you can get $100 off. Any tool goes. No matter how small, how cheap, what brand, or what condition. Also Festool will pay shipping for the old tool.
Here is the best way I have found to utilize this deal. If you go to festoolproducts.com you can get a tsc55 with metric scale for $440 and get 4 free batteries. With the new promotion you would get another $100 off which would put it at $340 You could add a charger and still be less than the DeWALT, Makita, and Festool corded/cordless models.