1. Because people these days have some sort of natural aversion to charging for what they're worth. Mainly because there are so many people out there who aren't worth jack $h!t so prices remain low.
2. You haven't really been paying attention of late have you? What is required is a board made of non-combustible material. Steel is an example of such a material, nothing more. In fact, if a board complies with BS EN 61439-3 then it is by definition non-combustible. There are numerous plastic boards that comply with this standard.
It does look like a nice bit of kit, I can't argue with that. What I will say though is that it's a complete and utter waste of money considering Hager's current plastic boards also comply with AMD 3.
Buy it and all you do is play in to the hands of the manufacturers who are doing all in their power to perpetuate this myth that new boards 'have' to be steel. Put it this way, come January, unless we as a trade start to wise the f**k up, where the board manufacturers are concerned, all their Christmas's will have come early!