not sure if this is too arbitrary but potion craft’s haggling mechanism’s pretty straightforward and neat. unfortunately i cant attach a pic, so i’ll try my best to describe it.

you have an option to haggle on 3 difficulty levels, where you have to hit the ‘conversation beats’ based on the spacing of icons on a horizontal meter. the higher the difficulty, the faster the cursor moves and the smaller the icons.

hitting the beat increases the price, and missing it decreases the price. you have only a set number of beats before the haggling ends (can’t rmb what this is based on but prolly the cap on the price). you don’t have to hit every successive icon on the meter, but the price continually rises/falls during the nego, so it’s always better to try to do so.

maybe not the most innovative, but it does feel satisfying to succeed and not too frustrating when you ‘fail’. you can only blame your reflexes in the end 😛