The purchaser of any property at an upset sale shall pay to the bureau the entire purchase money on the date of the sale, no later than one (1) hour before the close of business or at such other time on said date as designated by the bureau. In case said amount is not so paid, the sale shall be voided and the property shall be put up again at the same sale, if possible, or at any adjournment, readjournment or continuation of the sale.
72 P.S. § 5860.606