My opinion is the same.
Nerfing means reducing options and taking away choices. Better belancing? YES!
The pimps could do so many good things to improve the trader:
If your lootstage and or traderqueststage is below item quality, then prices should be doubled or trippled.
Progressionitems like vehicles, magzines or beaker should be always available, but also at increased prices and yes if your gamestage is to low, the price should be 5-10 times the normel price. Why? Because now you might have goals, ("only 50k more dukes for that beatufiul motorcycle) and you have to do tough choices. 750 dukes for that vehicle magazine or food, so I might not starve to death?