It's more reasonable if -- @Richard 26
But if they are using the "Aircraft Carrier Procurement" methodology ...
Only 400 of the initial 550 will have to be supplied actually working. Additional funds (approx 30%) will be made available for the other 150. The "room for growth" requirement for the other 3200 boxes can be "forgotten" -- future expansion costs can be subject to future negotiations. There is always small print get-out clauses so that any failures and liabilities are always the fault of, and responsibility of the taxpayer; they voted for it. High level negotiations will be lengthy, and held at expensive, sunny resorts with family and friends accommodation provided by the contractor.
[missing the joke's on the taxpayer icon]