Even retail they’re only like $25 a pop, which granted is more than the buck-or-less of a normal rubber valve stem but probably pretty negligible if you’re on a government budget. They’re less in bulk. The real bitch is you need to dismount the tire from the rim to get at it, then remount and balance it. And then get the vehicle to learn the new sensor ID code which for some vehicles can’t be done onboard and requires a separate gadget.
Even retail they’re only like $25 a pop, which granted is more than the buck-or-less of a normal rubber valve stem but probably pretty negligible if you’re on a government budget. They’re less in bulk. The real bitch is you need to dismount the tire from the rim to get at it, then remount and balance it. And then get the vehicle to learn the new sensor ID code which for some vehicles can’t be done onboard and requires a separate gadget.