Allows for expanded dialogue options when discussing business arrangements outside of the barter system. Especially applicable when speaking with Uncle Roe of Canterbury Commons, see Merchant Empire for details.
This perk only affects purchases, one's own sold items' price are not affected by this perk.
If the 25% discounted price is below base price, the list price will be the base price.
Once this perk and the 60 Barter necessary for it are obtained, most vendors will already be selling their items at the lowest cost (Base Value).