You might try Craig's list That way, it is local and people can pick up the items. However, use extreme caution in meeting strangers and ask for cash only. Don't have anything to do with Western Union or other things often used for scams.Only meet strangers in a public place and take someone with you.
Have you tried doing a search for sites containing your collectables. You might find a place that has a spot for you to sell them, or they might be willing to buy your items from you. Or you can look into auction websites also. My dad is on an auction website buying stuff daily. Not ebay. Look for local auction websites. I hope you can find what you are looking for.