 Due to the prosperity of his domains, Bolko II bought much land from less prosperous Dukes of Silesia.In 1358 he bought the gold mine in Złoty Stok, and half of Brzeg and Oława from Duke Wenceslaus I of Legnica; soon after, he also bought half of Ścinawa from Duke Jan.In 1359 the Emperor allowed him to buy territories near the Bohemian border, including Frydlant, and shortly after Bolko II also bought the town of Siewierz from the Dukes of Cieszyn for the amount of 2,300 fines.