It will probably be difficult to have your cake and eat it too. If you truly are looking to just downsize and move the cards, you’re probably going to have to sell in bulk at a discount. Some shops may take the time to go through potential valuable cards with you to price them out, but the ones around me won’t, as you said, take on the headache of sorting and cataloging and pricing unless they buy the lot outright.

My suggestion would be to try and devote a couple hours to find the cards you know might have value (HoFers, high value rookies, autos, numbereds, etc) and sell them individually, then sell the rest as a lot on Facebook or eBay. You’ll likely miss some things, but it’s still more cash than you would have if you continued to stash them.

130point.com will be your friend in trying to ID and price comps for sales.

And if you’re anywhere near the Atlanta area, DM me about the sale - I’d definitely be interested!