Cheap it ain't, John, but it beats the long dry spells all hollow. It also beats extraction problems with a rimless, especially when standing in front of an enraged animal. If .500/.416 brass does become unavailable in the future, he can form brass for domestic use from .470, which should certainly be available, and save the .500/.416 brass for trips to Africa, where a proper headstamp might be important. A couple hundred rounds of brass would last a long time that way.
---------------------------------------------------------------------------