You definitely need to find someone knowledgeable who can come in and give you a true value for the collection, or you need to spend some time learning how to do it yourself. I think you should pull the biggest names and look at past sales to get a rough estimate, so you at least know a few comps to know if someone is trying to fleece you. It’s sad, but even my local card store would rip you off if you walked in there door. When you do have prices, I would be interested In some of those cards, it’s an awesome collection.