Next year we will have a complete dh bike for around 3500$ in europe.I think the notion of a Carbon 'premium' is exagerated, and as long as 'we' continue to swallow it - the prices will stay high.
Funny that, for example, the Carbon V10 and Alu V10 were the same price at intro -- it has gone up, but so have Alu frames as well.
Prices are what the market will tolerate; people have rationalized tolerating a lot -- dont, and the prices normalize.
But since people 'gotta have it' -- welcome to Redbull pricing! (Appropo I suppose.)