I know of one commercial ammo loader who still uses those machines...
Space Coast Bullets in Melbourne, FL.
4250 Dow Road, #307
ph. (321) 259-3044
Calvin is the owner/proprietor, and spends what I think is an inordinate amount of time keeping those particular machines operating. If I remember correctly, he actually had to machine replacement parts for them, and scrounge others.
He also runs Ponsness-Warren machines, and hydraulic/electric conversions for Dillon 1050 machines.
"Bother", said Pooh, as he chambered another round...