Bob owns 275 hectares of prime rural Torrens title land in New South Wales which includes sheds, irrigation, water tanks, fencing, and cattle yards. The property is mortgaged to Paul. Bob, having a bad run of seasons and poor financial advice, falls into default. Paul exercises his power of sale (assume that all notice requirements and waiting periods are complied with). Paul appoints a seemingly reputable agent to sell the property by auction. The auction is advertised in the Northern Beaches News, but not in any rural, local or Queensland newspapers. Nor is it advertised as prime grazing land, but simply as a 'large acreage suitable for various purposes including agriculture'. It transpires that the agent's expertise is limited to the sale and marketing of inner-city apartments. Only 5 people attend the auction, which is held on the same day as the NRL Grand Final. The property is sold to Olivia for $600,000. Bob believes the land is worth $3 million. With reference to legal authority, advise Bob on the property law issues