Not sure the best category for this post but…

I collected baseball (and some basketball/football) cards in the late 80s and early 90s.

I have some Griffey rookie cards and some early Jordan cards as well. Pretty stoked and had forgotten how much I was into it.

Basic web search for some of my more valuable cards is a bit difficult. Some are listed as being sold on eBay for several thousand dollars and then the same card listed from Walmart for 3.99.

Anyone with experience pricing and selling cards? What’s the best way to do it?