On 10 March 2011 the Parliamentary Budget Officer, Kevin Page presented an analysis of the costs of the proposed Canadian purchase and concluded that the program will cost C$29.3B over 30 years, and not the C$16B to C$18B the government has been claiming and would push per aircraft costs to C$450M each. Defence Minister Peter MacKay stated that cancelling the deal would "endanger the lives of Canadian pilots" and "endanger the sovereignty of this country", although he did not give specifics indicating why that would be the case.[110][111] The Canadian government has questioned some of the assumptions that Page made, such as the aircraft lasting 30 years instead of the planned 20 so that 10 more years of useful life could be added to the fixed sum. After reviewing the Parliamentary Budget Officer's report the opposition Bloc Quebecois leader Gilles Duceppe was reportedly shocked by the cost and changed his mind on supporting the sole-sourced F-35 purchase and now opposes it as unaffordable, favoring an open competition to choose a new fighter instead.[112] The defence department responded with their own details of $16 billion in costs over a lifespan of only 20 years.[113][114] On 23 March Kevin Page responded to the Defence Department's assistant deputy minister who claimed that Page had made mathematical errors in his calculations on both the individual cost of the F-35s and on their long-term maintenance. Page indicated that the latest US Department of Defence estimates are for US$151M per aircraft and that the US would not pay more for the aircraft than its allies.[115][116]
Laurie Hawn, parliamentary secretary to the minister of national defence, has said that they expect to purchase the aircraft for between $70 and 75 million each, but that number was not firm, but based on conversations with other international customers.[117] He defended the 20 year budget figure and said "It really is the best airplane for the best price with the best benefit to Canadian industry to serve our military's needs for the next 40 years".
I wish I could just get a single number, but it seems both could be right