A modern, armored Humvee goes for around $150,000, so it isn’t that much of a leap. And in any case, the Humvee has been increasingly replaced in Afghanistan by mine-resistant vehicles like the various MRAPs, where the unit cost can exceed 1 million dollars.
Sure, buy a few. Buy a few hundres.
Buy a few THOUSAND and you have a big spending problem.
We simply cannot expect every soldier to ride around in a $250K MRAP vehicle.