Everything's tripled, more or less...partly because the Dollar is so much weaker, and partly because it's a completely different world.
Some stuff is 10x the '84 price.
That's part marketing, part regulatory, part fashion, part aging out of the hands-on workforce, part globalization.

Heck, I bought a running & driving rust-free Hemi 4-speed Road Runner around then for $4000 and drove it 500 miles home.
Sure, it was tired, non-#s and needed restoration, but what would that cost now ?