I think that if a manufacturer is going to ask 10-15k for a machine, then the pin has to be over the top loaded (which they're not). The pins haven't made any crazy technological advances in the last 20 years, but the pricing recently has. A "SLE" model needs to justify a stupid ridiculous price of 15K (robotics, lasers, crap literally blowing out of the back box). Frankly, I think it's rather insulting to take advantage of the collector the way they did. It shows that limit the quantity and people will pay anything for a basic sub par pin.
The pinball manufacturers are doing a test of what the public will tolerate. It's obvious that it worked for the BM66 title, so in turn JJP raised his pricing to do hid own "cash grab".
Time will get the best of the industry, and if things don't fall into place (5.5-8k NIB) in the next few titles, things will slow dramatically. There's only so many collectors/OP's and so much space.