These cars were not designed, built, or expected to be around 40 years later (like just about every other make and model ever produced in the world) so some things just don't survive well. Dash pads all depends on where the car lives, is it parked outside all the time or is it garaged a lot, etc. Luckily, my dash pad is like new yet but for many of the f's, a new dash pad is a much needed item. Seems like a fair price, considering the work it took to get to production and the labor they take to produce. I've seen the process and it's quite the job and you definitely have to know what you're doing and have the equipment to do it.
Who'd have thunk any company would do this for an F-body?

Now, if the console lids materialize, THAT I could use. Mine's OK but it's been unwarped (dewarped?), glued, and repaired.

It won't last that way forever.
Sorry, no cores in my possession.