That's the way of HUMMWV parts. As stated, YES there are cheap or way cheaper than others. They are the real deal, and NOS. My experience and two cents worth, if you want it to ride like a truck on solid tires, these are the one's. Put them front and rear for a cheap fix for old saggy, worn springs. Run a little lower air pressure (not 30psi) and stay to the highway.
My feeling having looked at all the variables and many spring options... the HUMMWV is not going to be the best in both on / off road situations. If it's a parade truck, take it to work now and then, out to Denny's for some grits, won't really matter. It will be OK, like a old truck on the highway stiff and taller. Off road and no load with any spring setup... bang and bounce like wooden wheels.
If you look at all the various military Hummve models, they were built to carry loads and heavy to overloaded ones. (my simple terms) Again, along the way modification / upgrades / experimentation. Suspension was no exception. I have seen a listing of all the spring options (google ??) -1. -2 , -5, -6, variable rate, Rod Hall set-up, etc.
Still fun to work out the bugs for hobby / practical use. Still a bumpy ride the kid in all of us love.
HUMMWV... Sometime a deal, most of the time not so much. CAMO
Now where did I park the Toyota TRD ?
