I haven’t had a chance to play yet but iirc BG1&2 shop prices varied massively depending on which of your party’s characters did the shopping, I.e Charisma modified price.

Are we seeing a variation in price vs what a character in your party could purchase it for vs you doing the purchasing? I.e the shop shows the best price based on party and then the actual cost based on lead character doing purchasing?

Might be total bollocks, but thought I would take a stab at it 😁