Mercedes CL600 Brabus 6.7 liter brake system

Hello, I have since yesterday a Mercedes (Brabus) CL600 with the 6.7 liter suction engine ! Year 2001 ! The vehicle has a Brabus brake system ! I urgently need the front brake discs. Does anyone of which manufacturer these discs are ! Brabus wants about 1000 Euro for 2 discs !! Appears to me a little much ! About help I would be very happy ! Greeting