I'm seeing a lot of examples where today's tech is being use to fix Pinballs.
Homepin's replacement boards.

There is a company in the US that will be show casing their products that replace old parts tech
and will be on display as CES.  Power supplies, sensors...  Lights.

Leds are replacing old bulbs including the 44 and 47 (which can give off to much heat)

New tech is making way for new pins.  I expect to see a lot more on offer.

Exciting times.
With increase in supply and using new tech.  I expect the price to drop.  (even if on resell)
Red