Gives you better prices from merchants.
Longneck Lukowski's Cannery - This area has a number of raiders in it. Be wary.
This Bobblehead is found in the room just above the entrance. Head through the Northeast door of the entrance room. Head to the east into the factory floor after that.
Head past the cannery robots and to the Eastern Wall. Turn to the South and head up the stairs there.
Turn to the West at the top of the stairs. Head for the next walkway
Follow this walkway across to the next control room. Head over to the West then turn to the South.
Go to the Southern part of the room. On the desk, nearby you, is the Barter Bobblehead is found just next to a Tales of a Junktown Jerkyvendor Magazine.
"Never forget to walk away with more than you've bought."