Black Market Ties extends your black market discount to weapons and gear, saving 20%. It follows Black Market Affiliation.
Black Market Ties is entry 4 of 13 in the Swindler branch, one of the three branches (Ringleader, Insider and Swindler) on the Rooks' 39-upgrade board. It is bought with money and materials, not skill points: £4,000, 50 Chemicals. Before Black Market Ties unlocks you need Black Market Affiliation.