James Marsh - MD Interviews, page-417

Civil Subcontractor LD risk alleviation, mitigation options, cost savings, earlier achievement of milestones, reduced cashflow risk
EPC Contractor LD risk alleviation, mitigation options and cost savings, earlier achievement of milestones, reduced cashflow risk
Developer/project owner gains earlier finish, earlier revenue, finance cost savings
Lower risk funding due to shorter project timeframes

There are savings throughout the Project Supply Chain thus the actual saving is significantly magnified all of which can be dollar quantified. So whilst the project may save 56k a week in recurring preliminaries, the Project saves significantly more than this across a broader array of cost and risk mitigation opportunities. If they can get it off the ground the potential is mind boggling.