AMD's response to discontinuing some MoPar product

Seems a lot of people defending AMD's decision. I get that they need to be profitable, but maybe if they didn't charge Mopar people way more than other makes, we could buy more. I paid $500 for a 69Dart fender. I saw 67 F100 fender for $180. My 64 Sport Fury quarters were $650 each. How much does a quarter for a Chevelle cost?