I call BS on this. Many progressive loaders have longer operating handles and mechanical linkages that multiply the effort used in pulling the handle. It does not take 6-times the effort to operate a progressive loader as it does to operate a single stage.I think it would be in your best interest to wait and see what happens to the new prices of reloading components. The prices might end up being more than the cost of new shells? The reloading market could just dry up as well?
You also have to remember that, even though you pull the handle only once per shell. The force needed is 6 times as hard pull that handle, compared to your single stage press!!! I see lots of retired shooters move back to the easier to use single stage presses around here. Auto-mates and hydro machines are expensive, take lots of time to set-up and can't be moved after you do!!!
I expect to see many shooters stop shooting in the next year or two!!! So it would make sense that we will see lots of used reloaders for sale here in the for sale section as they retire from shooting. By then you will know the cost of reloading components and could get a nice deal on a lightly used reloader? I hope I gave you something to think about. Since their are no new reloaders to buy right now. The price of used ones are selling for to much, to be a good buy right now. I would wait and see myself. Good Luck to Ya. don't forget to break em all Jeff