Does anyone have any idea why the Festool Angle stop FS-WA is so much cheaper than the GRS-16 PE? The GRS-16 goes for $180, and the Festool branded one can be had for as low as 102 Euros (~121 USD) if you can import it. I know TSO licenses the design to Festool, but I would have expected that would translate to a higher price since Festool would stack their markup on top of it.