Agree they are overpriced, i can pick up some free scrap mdf from my local builders merchants and build it myself for nothing just cant find a template.
I have had a couple of TUV fitments over the years, both for a MAN, left and right hand drive fitment, not universal obviously.
It has never been an issue in any country, however whilst out with the dog this morning I saw a Merc Sprinter builders truck, the line of kelt piled up on the dash came half way up the screen. I will take my camera phone on Monday 