Exercise of right of pre-emption.

    (1) At any time before the close of the day on which the sale takes place any person who has given notice of his intention to claim a right of pre-emption under section 79, sub-section (2), may, on payment to the officer conducting the sale of a deposit of twenty-five per centum on the highest bid made at the sale, claim to take the property at that bid.
    (2) If the right is not disputed, he shall be declared to be the purchaser.
    (3) If the right is disputed, the Collector shall inquire into and decide the dispute and declare the purchaser, and his decision and declaration shall be final.