I'm lucky in that I got my brick from Nicksan and it's the best one I've owned, and I've had 3 of them. It's very sharp and focuses perfectly on my 1DMKIV.
I too think Canon is nuts with their astronomical pricing lately, but if people will pay it, they're going to charge it.
My brick has been my go to lens for event photography, but lately it's just sitting in its case as I use my 70-200 and 85L and 50L, along with 16-35 much more.
It kind of reminds me to look back at photojournalists. There's a somewhat well-known one named Karl Grobl. He makes due with a 70-200 and 16-35 for over 95 percent of his work for years now. He will use a 50 1.4 when he needs some low light work, but unless you specialize in something, it's really all you need.
As to the medium format comment above, forget the price. For many of us who shoot moving objects, sports, etc., it's just not suitable.