1971 340 intake manifold

Kern Dog said
If my $125 price is too high, what is a fair price for this intake?

That's a good price in my opinion.

Also, for comparison, I paid $40 in 1975 for a nice, used OEM 1970 Dodge Dart 340 intake manifold. That $40 in 1975 is equivalent to approximately $192 in 2020.