If you own a Mopar and have bought parts - you've been gouged.
However, only a purchaser can decide how much they are willing to pay for a part. If you try to enforce some type of "flat-rate" system on parts, it'll crash real quick. Immediately the number of parts will decrease and one would never get to see an ad for something they may have paid just that little bit more for to get it.
As in the rest of the world caveat emptor - but show some common sense in viewing the ads.