(1) Until the time of conclusion of sale and unless the contract gives the auctioneer an authority coupled with an interest, the authority of an auctioneer may be revoked either expressly or in any of the circumstances in which an agreement may ordinarily be terminated.

(2) The authority of an auctioneer may be withdrawn although the auctioneer has advertised the property for sale and incurred expenses in respect of that advertisement.

(3) An auctioneer is liable for trespass if after the termination of the authority, the auctioneer enters the premises of the vendor for the purpose of effecting a sale.

(4) Where the authority of the auctioneer is revoked, the auctioneer shall not give the highest bidder right to the property even though the highest bidder is not aware that the authority of the auctioneer is revoked.