Now that I finally have my Julie The Pinball Pachinko machine, I'm interested in learning more about ball counters so I'm having an idea what I'm winning vs what I'm spending. I see there are battle counters and then there is also Dave's card reader emulator. Am I correct to understand that you can set this Dave's dongle in such a way that it can simply count the balls spent vs won (instead of showing credits spent) or do you need a battle counter for that? Also, given my location, where is the best place to buy one or the other?