The skill of trading. In the post-nuclear world, currency is not used commonly. Barter will allow you to get more for less when trading equipment, weapons and other items. A high Barter skill will lower the prices you pay for items you purchase, and increase the money you get for selling excess equipment. A good Barter skill isn't important if you're killing everyone, but it certainly is a valuable skill for the non-berserkers out there. Automatic use.

Initial Level: Starting Barter skill is equal to 20% + (2% x Charisma). Average characters have a 30% skill.