I have a Inspiron 8100 dell laptop with a cracked screen. I am trying to get rid of it and I don't know how much it is worth. I was offered $65.00 Is this about all I can get out of it?

Call Dell and ask them how much they would charge to replace your LCD, then based on this you can price the unit with those costs in mind for someone that will need to replace it.

Thank you for your answer!

Take the $65 and don't look back.