How often I have heard parents and grandparents complain about the hoard of baseball and other sports cards left at their home. They may contact the owners who have moved out but get faced with the statement “Just leave them there, I will get them but do not throw them out”.
Or the cards may be part of your own collection, organized or unorganized. But, I agree with the family member that says “DO NOT THROW THEM OUT” Instead get them appraised and sell what you can.
Just to tease you a bit check out some current cards for sale on Ebay.
So to begin your exploration of value I found a cool site called American Legends which is a store on the East Coast.
They also have a great article on How to Determine the Value of Your Baseball Cards.
I will post more on this later. Meanwhile let me know what you think.