118 In their closing submissions the plaintiffs challenge the correctness of the total holding costs and the amount borrowed. They say as follows: The true acquisition cost of the land would be $630,000 comprising an acquisition cost of $600,000 (in accordance with the Bondgate Contract), stamp duty of $24,000, settlement fees of $1,000 and loan establishment costs which the evidence establishes would be $5,000; the plaintiffs would not borrow the full amount of the total holding costs; Bondgate applied for a loan of $480,000 for the purpose of carrying out the development as well as the acquisition of the Lochel land; the Mandurah land was a trade property for a purchase price of $350,000; the amount that had to be funded by Bondgate for the purchase of the Lochel land would be $280,000 ($630,000 minus $350,000); based on a net return of $250,000 within three months from settlement of the house lot and the first distribution being received on 5 May 1998 the interest costs (at the plaintiffs' borrowing rate of 12 per cent) were calculated at $12,000, bringing the total expenses to $642,000.