Your best bet for selling these items is to contact a reputable hobby dealer, either through a hobby publication ad or at a card show or card shop. It seems that they are just interested in seeing how expensive they can make a pack of cards before people will stop buying them. But the card companies also continue to produce entry level products that remain affordable. Topps Opening Day and Upper Deck Victory are 99-cent per pack products. Obviously, high-grade items in any field will command higher prices on the secondary market.
Sports cards is no different.
Your opinion on what they are worth. That's a generalization that isn't necessarily true. Maybe certain cards haven't increased as much as you'd like, but many 1960s cards are performing well in auctions. There remains good demand for baseball cards from the 1960s. Some current releases include serially numbered rookie cards and the scarcity of those items force the value of them higher than a current Hall of Famer's rookie card from three decades ago.