Well, it may not work for you, but we sold my DH's comic book collection in his Dad's estate sale. Prices were nuts.
I think he had 2 rubbermaid tubs of comic books (60's and up), all in bags (5 to a bag?) Not in perfect shape by any means (well thumbed, his dad smoked, too). They auctioned them off - high bidder got choice of any bag. Second highest got next choice. Kept going... Started selling in lots of 5 bags, and so on. The whole bunch went for over $1500. Shocking.
Then the antique pump organ went for $10. Ya never know.
If there's a company near you that does estate auctions, they may accept your "lot" for sale during someone else's sale. Some do it on property, but some have an auction house where you can take stuff to be auctioned off. They may take up to 40%, though. This guy took 20%, but he boy did he earn it because he and his team spent a week prior to the auction going through and organizing everything in the house, the shop, the outbuildings, the barn. Put up tents, brought in portajohns, advertised, etc.