I agree with Larry
Companies need to put up the initial investment and ROI is hard in a high end small marketplace.
David Kirkham stated to me 289 are more time consuming to manufacture than 427.
I have built one and now on #2, they are slow, sourcing hard and a bit of work to get everything to gel before hitting the road.
Details cost and the CSX, SPF, KMS, ERA and other small MFG folks invest tons of time and cost into each one.
As for the CSX jump = Anniversary cars....
BTW KMS are alloy but glass cars also require work and are not to be discounted.