L300: Disc foils + mounting – What may it cost??

Moinmoin, I have to sound my windows in the back of the L300 with foils in front of me, because I often sleep in it and don’t want to have any curious looks. Curtains I find simply ugly, so they fail. Before doing it myself with foils, I was advised not to do so, because you can see just the same… Now I have got a few offers, starting from the usurer Carglass to the screwdriver around the corner. Here are my offers (material+assembly): 1. Carglass: 430 Euro 2. AGM Autoglas: 400 Eur o 3. Schrauber (Neu-Ulm): 355 Euro 4. Schrauber (Meersburg): 350 Euro 5. Schrauber (Friedrichshafen): 320 Euro Mhh Hand on the heart … but that can’t really be, especially since the L300 should really be glued ONLY, compared to any small car where you have no place to work and foils certainly not cost the world in the wholesale trade or am I so wrong here?? What do you think? Do you have a good address?