983650f0__attributes___The_Witcher_Wiki__Ability_name
[Effect] -20% to price of items in shops. [Means of acquisition] Convince the merchant to double the fee by using the Axii sign during The Kayran: A Matter of Price quest in Chapter I. You get the ability after defeating the kayran and picking up payment from the merchant. [Chapter begun] 1 [Ability name] 
Haggling
Character attributes - The Witcher Wiki
Ability name