Is there a way to disable these abilities? I would like to play without them, as I did since 2006, on my regular version of the game.
I tried to do that with console commands, but they came back after loading the game:

removefeet 1764
removefeet 1765

Than saving the game. But they are reappear again after loading.

Thank you so much friend!!! It took me a while to sort things out in that .2DA file, but now everything seems to work as I wanted. I am very glad that the "merchant's friend" can be disabled, because it did not work correctly (it actually gives you a +15% bonus for buy and SELL) and broke the economy in the game and also devalued the "Appraise" skill . Because of it, you could sell things to a merchant for more than you bought them.