I got a 960rd case from CFS a couple of weeks ago for $349 shipped. My lot was mostly P C H 39 but has a bit of E K mixed in. Black primer sealant on all that I inspected. I also shook 80rds and can hear the powder moving freely inside.
I shot 40rds of it today from a minty Vz24 with a Wolff 22lb spring installed. 39 went off on the first hit, 1 required a second strike. No hang fires. Fired brass looks good, no split necks or anything odd. I didn't really do an accuracy test as it was raining and getting dark out, but it seemed on par with 1950's Yugo which is good in my book.
Might pick up another case, I'm just not too sure how deep I want to stack 84yr old ammo.