That's what war is - the flushing of cash down the toilet. Unfortunately, as long as Russia stays inside Ukraine, we'll have to keep up with Russia's burning of moderate piles of cash. Given the 20 to 1 disparity in economic heft between the combined EU and US economies, It's likely the Western powers supplying Ukraine can keep it up long enough to see the last of the Russian presence in Ukraine. The US spent $1T in Afghanistan over 20 years to chase a ragtag bunch of guerrillas around the deserts and mountains of Afghanistan. If that amount of money sends Russia back to its corner for a couple of decades, it will have been money well-spent. After all, Russian imperialism, formerly wrapped up in a red costume, is why NATO came into being in the first place.
All the vehicles mentioned are surplus to requirements.
All are out of service or are headed out.
The $ in this package are mostly the nominal value of leftover inventory. I guess the US Army could sell them as surplus, but I dont see a market that will value them at anything close to the nominal value.