The auction shall be deemed unsuccessful if a) no bids had been quoted, or the price offered is less than half of the appraised value of the property, or less than the appraised value of a residential property under the conditions set out in Subsection (3) of Section 147, or less than 70 per cent thereof; b) the auction buyer did not sign the auction report; c) the auction buyer failed to pay the purchase price in cash or by way of credit transfer within the time limit specified in Subsection (1) of Section 149, or within the time limit specified by the bailiff for payment of the purchase price; or d) the auction notice was published improperly.