Pinball prices have always been something of an oddity.
With the possible exception of mega rarities like pinball circus, games tend to be priced according to how much fun they are. EMs come very cheap. Historically there were very few buyers for Bally SS - but more folk now appreciate their beauty.
Addams is common. We have all played it, many of us for 30 years. It lasts forever. Yet it remains one of the most expensive wpc titles.
Classic car prices are not like this, and the market is far more developed. Prime cars from the 1970s are very basic/ inefficient/ unreliable, yet really valuable. A lamborghini miura would get beaten for comfort, reliability, cornering, acceleration by a 10 year old m3. Other Italian exotica - the 1970s v6 ferrari dinos for for serious coin, yet are pretty average performance wise. Their rarity, sound, design philosophy and beauty drives the price (maybe Bally SS will do the same thing one day).
For banzai to go for 5 grand versus sub 2k for many system 11s actually has some logic to it. Banzai is slow, clunky, huge, heavy, impractical awful to work on..... but very special. It makes no sense that Banzais cost about the same as Whirlys/ Elviras a few years back.
There is nothing like it