(13) ‘public auction’ means a method of sale where goods or services are offered by the trader to consumers, who attend or are given the possibility to attend the auction in person, through a transparent, competitive bidding procedure run by an auctioneer and where the successful bidder is bound to purchase the goods or services;
(14) ‘commercial guarantee’ means any undertaking by the trader or a producer (the guarantor) to the consumer, in addition to his legal obligation relating to the guarantee of conformity, to reimburse the price paid or to replace, repair or service goods in any way if they do not meet the specifications or any other requirements not related to conformity set out in the guarantee statement or in the relevant advertising available at the time of, or before the conclusion of the contract;
(15) ‘ancillary contract’ means a contract by which the consumer acquires goods or services related to a distance contract or an off-premises contract and where those goods are supplied or those services are provided by the trader or by a third party on the basis of an arrangement between that third party and the trader.