Happy Birthday Rocky' and congrats Mr. rodmkr!
I've been "tumble-lubing since before tumble-lubing was cool." Prior to dabbling with those free bottles of goop LEE foisted upon anyone buying a push-through die, I used it "raw" and have made many modifications since then and use 45/45/10 or BLL almost exclusively now, but I've used a Lyman 45 for over fifty years - my dad's until 35 years ago, when I found a used one for $30 with a handful of dies.
I don't use it unless I have to, and sometimes I have to, but it's not going anywhere just yet. So, yeah, there's still a market. I think it would be passed over if I had an "hour to pack," but it's still useful as long as I have a bench to clamp it to - at least sometimes.
As wildly popular as PC is, I think those pioneers are still the minority - at least for now. With everything as scarce as it is right now, I think some folks who aren't even sure if they'd use it would snatch it up for fear of never seeing them again and missing the chance. I we had a gun show coming up, because I have stuff to sell too, but the lubrisizer isn't on that list. It comes in handy now and then these days and I do still like the greezy feel of my 44s after I've put a few 429421s downrange with those voluminous grease grooves. I do believe that the lube that coats the OUTSIDE of my revolvers provides some rust protection, whether it does any good INSIDE or not.