Ya, went out last sunday with the CP reg on it and the .687 J&J barrel and for about 5 hours of actual play not a single ball broke and only about 5 roll outs.
Started at about 400PSI and it was shooting about 320FPS, back the tension off and droped the reg pressure down to just a shy over 300 PSI and FPS dropped to 275.
Shot darts all day!
So ya, $170 for the KP + $85 for the CP Reg + $45 for the J&J barrel = $340 after taxes (CDN dollars)
Not a bad deal in my opinion (I've spent more on a damn spyder to make it effective)