I think about all the wealthy folks I can name off the top of my head - names like Warren Buffett, Bill Gates, Jeff Bezos, Elon Musk, George Soros, Jeffery Epstein, Rupert Murdoch, King Tut, Michael Jackson, John D. Rockefeller, Andrew Carnegie, Vladimir Putin, Genghis Khan, the Kennedy's, Donald Trump, William the Conqueror, J.P. Morgan, the Vanderbilt guy - those folks, and it occurs to me that not a one of them made their fortune playing the pocketknife market or lurking on websites all day furiously click-click-clicking. I bet they all have, or had, personal cutlery of some kind, but I also bet they thought about the worth of those objects either not at all or, at least, quite seldomly.
There's a lot of ways to come up in this world, but it doesn't seem like pocketknives is one of them. Railroads, oil, finance, warfare, politics, entertainment - sure. pocketknives? no.
Because of this unfortunate observation, I just use mine. If they aren't worth anything to anyone later, I'm fine with that. I plan to wring every bit of use and enjoyment out of them myself.