I don't think you will find any 'breaks' on pricing because Festool demands that all dealers sell at MAP (Minimum Advertised Price), but remember that Festool always offers 10% off the price of a Dust Extractor when purchased with most tools - and that certainly includes ANY saw. At least I am not aware of any saws that don't qualify for the deal.
If you are purchasing a TS55 track saw, be sure to ask your dealer to substitute the 55" 'Holey Rail' for the standard rail. There's no difference in price between the two, but with the 'Holey Rail' youve got a start on the LR32 cabinet drilling system. If you're buying a router, you'll definitely want that capability...