Baria Frontiers is a location on Illium off of the main trading floor near the taxi port and the Police Station. The store only sells one type of item: star charts to update and complete the Normandy SR-2's Galaxy Map. Shepard can talk with the store manager Erinya about some contracts involving the Feros colonists. No matter the outcome of that discussion, the price of the star charts will still remain at 500 credits a piece.