I have more spent on my 69 barracuda than all of them put together!!
You can’t use average inflation as a measure. Cars follow housing costs, not average inflation.If you adjust the price just for inflation from 1970 dollars to 2018 dollars (4%) it looks like this:
Duster $17 622
Cuda $21 546
Roadrunner $18 930
GTX $22 854
Superbird $26 777
I'll take one of each thank you.