I learned how the merchants work in the DOS games (but not after accidentally giving merchants all my loot in the beginning or when I was not paying attention) which was an awful learning experience.
There is nothing really good about it, giving items to get reputation is... eh. It feels weird. The doubleclicking/dragging items in the barter screen feels tedious. It is tedious to fiddle with math and balancing stuff when you have too many items and need to buy potions/scrolls to balance it, or remove them and rebalance. It feels weird to just offer a bucket full of random junk when you do not have enough money, to have equal value.
I also hate how each companion needs to sell seperately, and how every companion has prices adjusted to their charisma (Even when talking/initiating trade with your high Charisma person). It either means your Face of the party does not matter when selling stuff, or you need to do the extremele tedious chore that is inventory management (It is a chore in BG3 and DOS games. Moreso in BG3 though) and move all the lootstuff one by one to your party Face.
It is not fun, just busywork and feels like a chore. In most games it is sort of fun at least to go to the vendors and sell your hard earned loot and see the gold come in. In BG3 (As was in DOS) I tend to dread going to merchants and kind of have it as a "Well. Let's get this over with." moment.
