Less to look for maybe? Edge lettering, die clashes, NIFCs, series fillers, etc. I've learned a lot from the Native America and Innovation series - great history lessons! In case you want to see my collection:
More expensive to do, and harder to find places that even have them. But some people still do, and there are interesting things to find.
Let me try some links, because I believe they are in the middle of his library of videos so it may be hard to find.
I don't get boxes at a time, but i will grab a number of rolls and go through them. I have my own binder I fill and like to look for errors. Not much to find, but no loss either. They are easily spent just as well as paper dollars.
That's quite a collection! I'm going to metal detect one day... always been something I'd love to do.