I bought $200 in half rolls from a bank and found 3 - 40% kennedys. Hey, I am not complaining. But then I went to another bank and they had one roll. It had four 90% kennedys and 2 - 40% kennedys. Good deal!
You never know! I've done 4 boxes, and my best day CRH so far for halves was one bank that had 13 loose rolls. I got a solid 40% roll there, I think I got 49 keepers in those rolls.