are things really that overpriced these days?

I think it's under priced myself. You couldn't build a car like that for $20,000
I should know, I just finished a 71 Demon and a 70 Challenger before that.
Labor is expensive today. A quality laser straight paint job will cost you $7000.00 today.

Wilson
Ontario Canada

I don't think that 70 Swinger has a laser staight paint job. Nor close to the quality of work and detail that your car has.

You'd have to take the 70 Swinger all apart and do a full resto to get to the same point your Demon is now.