I have no clue where that rumor came from. The FMS approval for up to 2747 vehicles had a unitary price of 376,775 USD, and it included quite a lot of extras, as always with FMS authorizations which tend to aim for the stars as it is easier to buy less than authorized than seek a new authorization,
The Government of the United Kingdom (UK) has requested a possible sale of up to two thousand seven hundred forty-seven (2,747) Joint Light Tactical Vehicles (JLTV). This possible sale also includes baseline integration kits, basic issue item kits, B-kit armor, engine arctic kits, fording kits, run-flat kits, spare tire kits, silent watch kits, power expansion kits cargo cover kits, maintainer and operator training, U.S. government technical assistance and logistics support services, and other related elements of logistics and program support. Total estimated cost is $1.035 billion.
With no evidence of big cost growth on the US side, i have no clue on which grounds the news of big cost increase for the UK started to circulate.
Mind you, the introduction of ANY new fleet comes with costs that go above and beyond the purchase of vehicles and kits themselves, but that is hardly the JLTV fault.
I wonder if the crowd of people opposing this purchase (not without some reason, thinking of home industry capability) have gotten overeager with their claims.
Also note that the latest US purchase includes 6100 vehicles and 22.000
Oshkosh Defense LLC, Oshkosh, Wisconsin, was awarded a $1,698,639,588 modification (P00163) to contract W56HZV-15-C-0095 to exercise available options for 6,107 vehicles and 22,166 kits. Work will be performed in Oshkosh, Wisconsin, with an estimated completion date of Sept. 30, 2019. Fiscal 2017, 2018 and 2019 other procurement, Army funds; and 2018 research, development, test and evaluation funds in the amount of $1,698,639,588 were obligated at the time of the award. U.S. Army Contracting Command, Warren, Michigan, is the contracting activity.
Doubt the UK is purchasing anything near that number...!