Quoted from ataritoday:
if pinsiders are a good estimate for pinballarcade downloads (or zen), then probably not a ton of $ here, but it would appear that you can make some money in selling digital games as williams and stern have done deals... anyhow a quick call to pinball arcade team would let them explore the option.... maybe it generates a little $...
looking back at the kickstarters, pinball arcade had to raise $100K to make some of their licensed tables commercially viable... so I agree, not big opportunity based on that as well.
The high cost was because of all the various assets and high costs associated with them--largely because of the actors that appear in the game. That wouldn't be the case with JPop's themes.