I put in an offer today on a property that is going to auction this Saturday. The offer lapses in 3 business days because I didn't put in a shorter timeframe on the contract. If the vendor doesn't accept the offer then it lapses on Monday. If I don't get a response from the vendor prior to the auction can they go ahead with the auction on Saturday and sell the property, or go ahead with the auction but doesnt sell and decide to accept my offer?