That's about what the "kit" from the dealer costs including install (assuming there is on for the M). If I'm not mistaken it covers about the same area that a normal nose mask covers.

What I'm looking at is not having any "seams". Hence covering all of the hood and the fenders. Could that be the difference in price?

I'm torn on the rockers as well. As I mentioned, I had the M kit on the two X3's I owned. There were no problems at all. And so far no problems on X5M I have now.

My thoughts are if I can cover it and you can't see it if it prevents the chips then that's good. But I hate to waste money on uneeded "stuff".