It's always mixed in with other stuff, so 10-12 cents ea is the going rate. Primers take a bit more force to seat, but not as much as S&B does (I hate that stuff).
I've picked 1 or two once fired cases that were cracked, but that's out of a thousand or more, and I don't think many of mine split.
There was a lot around when canam had their 1911 sale on. Somewhat less now.
45 just seems to last forever too. I've lost more to my JR carbine mangling them on FTF than I ever had to splits