I have so many baseball, football, hockey, and basketball cards that I don’t know how to sell. They are all mostly early 90’s cards, mostly Upper Deck brand. I probably have somewhere between 40,000 and 100,000 cards. Many are factory sealed complete sets, some are unopened packs, some are in 800 or 3200 count shoe box style, those that were worth at least a quarter in 1996 are in card pages, those online prescription medications that were worth 3-4 dollars or more are in individual card holders. I have a 1984 Topps John Elway in near perfect condition, I have Barry Bonds rookies, I have so many more that I don’t hardly know what I have. The problem I have is that I no longer am up on who are the sought after cards. All I want to do is get rid of them and will take half Beckett book value just to get rid of them. I just have no idea how to get rid of them but in a way that I can get at least 20-50% of their book values.

So, my question is what is the best way to sell and best way to list what I have?