Quoted from Baiter:
Wow quite a lot of opinions to sift through.
Assuming we are talking about modern Sterns 1999+, the lower production candidates tend to be NFL, NBA, CSI, 24, BBH, Striker Xtreme and Sharkey's Shootout. All my research tells me tells me there were less than 300 of each made. From personal observation, I have yet to see an NFL in person anywhere. The only NBA I've seen is at Universal's NBA restaurant. I've only found 1 of each of CSI, 24, and BBH on location since they were released. I have seen several Striker Xtremes, but Sharkey's Shootout maybe 1? I'm as confident in this list as one can be with research and anecdotal evidence, yet no ability to confirm the numbers... I'll put them in order of rarity first.
NBA - 200
Sharkey's Shootout - 250
CSI / 24 / BBH - 250-300
Striker Xtreme - 250+
I believe all other Sterns had higher runs than the above titles
There were way more than 2,000 Striker's. There were 500 Shrek's. Most of them sold to CeC's. Your other numbers look better, but there are over 85 NBA's. Serials indicate that there should be around 200 NBA's. Stern usually ran at LEAST 200 of every single production title. Even the ones that sucked.
Keep in mind that not only people in the US buy Stern pinball machines. 50% of sales are other countries.