39 Pa. Stat. § 170
Whenever the purchaser or purchasers of real estate at assignee's sale, made under the act of assembly, approved the seventeenth day of February, one thousand eight hundred and seventy-six, entitled "An act to enable assignees for the benefit of creditors to make sales of real estate encumbered by liens," shall appear, from the proper records, to be entitled as a lien creditor to receive the whole or any portion of the proceeds of said sale, it shall be the duty of the said assignee or assignees to receive the receipt of said purchaser or purchasers for the amount which he or they would appear from the record as aforesaid to be entitled to receive: Provided, That this section shall not be so construed as to prevent the right of said assignee or assignees to demand and receive at the time of said sale a sum sufficient to cover all legal costs, entitled to be paid out of the proceeds of said sale.
39 P.S. § 170