Junk Merchant (Fallout Supplement)
From D&D Wiki
One man's junk is another man's treasure.
Benefit: All items with a base value of 1 TU/10 Caps or less can be sold at their full value instead of half. Example: You are selling a broken doll to a merchant with a value of 4 caps. Instead of starting off negotiations at 2 caps you start at 4 caps. Then apply the results of your Bartering.
Normal: See Diplomacy and Bartering
Special: You may take this feat 2 times increasing the base value of junk to 2 TU/20 Caps. If used in conjunction with Bulk Trader all items being sold must each have a base value of 1 TU/10 Caps or less. 2 TU/20 Caps or less if you've taken this feat a second time.