3.1.25 Given the complexity of PPP procurement, the more thorough the due diligence done before the GPE calls the PPP tender, the lesser the bidding costs are likely to be for both the private and public sectors. This will in turn increase the likelihood of the GPE attracting bidding interests from strong and competent private sector players. Such due diligence includes working out a balanced and robust PPP contract, and conducting market sounding before the PPP tender is called.