Yeah, I don't quite understand the way pinball prices work. I'm not saying anyone is right or wrong, but the process is really quite taxing at times. I know it's only $100-200 on a large purchase, but it sort of shows you that each distro has their own small agenda at play. It is what it is, though. I think all of the guys I've called and spoken to have been class acts, but the prices are all different.
The only real joke I've found (no offense) is the distros who say they offer a "Pinside discount" when I've NEVER been given two different numbers. And I've tested this theory, ha.
Just call the whole list and see what comes of it. Building a reputation will help, but I can say that it didn't necessarily help me get a better price on a second NIB I had quoted.