I got a better deal than others on the Group Buy since I helped start it up. For me it was about 90 CAD shipped to my door, otherwise expect it to be a bit more - around $110 shipped.
Boots, I'll eventually try to do this to my current [broken] fogs when I get some time. But for now, this is a great option
Ivan, yes they should be entirely interchangeable between M and non-M bumpers.