There are more valuable as they're more limited.

I still have some of my Barkley collection, some with game used shirts and pieces of basketball on them. I hope one day I can sell them for a few bitcoin or otherwise I leave them for my children.

That's one of the reasons why I wanted in on this project. I loved collecting them and had thousands, to be allowed to create them now is so cool! That's why I said I would do it for free.