Sometimes people associate A titles with value or popularity when in fact, A titles seem to be the titles in the pinball world with the highest demand that has what is considered "complete game code".
Is Tron LE an "A" title? Is Spirit or Fathom an "A" title? Certainly Addams Family is an "A" title? Right? What about Iron Maiden LE?
So, the original question asked is flawed.
There is no such thing as an A title "price" because they all sell for different prices that vary greatly. If the intention was to determine the cheapest "A title", then the answer is probably somewhere around Spiderman or TSPP? But are those games really "A" titles?
Truth is that A titles may not exist at all. It could just be that people automatically consider a 5K+ toy to be an "A title" so that they can put a definition on a purchase and also feel better about buying a 5K toy, as an adult.
It's not really so cut and dry is it?
Perfect examples of all machines have been selling for big money for years. A very nice HUO EBD is hard to find and valuable. If it sells for 5K, does it all of the sudden answer your question or have games always sold for a lot in the past and you just didn't pay close enough attention because you were not "in the know" or "would never spend that kind of $ on a "toy" 5-10 years ago but now it's ok?
Is ANY game that sells for over a Stern pro price automatically an "A title"?