this is odd. Generally prices are made out of your party's reputation and your leader's (the upmost picture) Charisma. My Bard has now 19Char and gets to 25 with casting friends and that gives me a VERY handy discount (as I have rep of 20). I remember items costing 20000gp+ on my first run through the game (years ago
) I can now get for less than 10000gp