To the OP, you just never know...
I "lost" money by holding onto these and not selling them before the Black Swamp find when I had multiple opportunities to do so.
As a collector, however, they still bring me a lot of joy when I pull them out and look through my collection and that's good enough for me.
Ultimately, if you are collecting what you like and enjoy, you don't need to worry about having a crystal ball and trying to figure out what direction "the market" is headed.
