Once again, and I can't stress this topic enough...as an avid collector of all vinyl records, it is the condition that they are in which is most important to collectors. Grading of records vary from dealer to dealer. Who wants a record that is unplayable? A good way to start is to look up some of your artists on E-Bay & compare your quality of disc with what they are selling for. This will give you a general idea of their worth, most people desire mint or near mint condition.
Thank you for your response. While they are not in mint condition, they are in excellent condition. If it weren't for the fact that I am moving, I would not part with them at all. I'm told that there are "collectors" that seek albums. I have no evidence of that.
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them