I agree with you, but car dealerships regularly jack up prices on desirable vehicles. It is happening right now with the new Bronco.
As for hoarding, beanie babies over twenty years ago. Dealers would buy them, then leak them out at 2-20 times their MSRP.
The web is replete with secondary sellers for just about everything. Shows have gotten to be a ridiculous. good tickets for prime shows fetching hundreds if not thousands of dollars