Sometimes direct.

Are you part of the Facebook groups? For Folio there is Fans of the Folio Society as well as two buy/sell/trade groups (one “fair trade”).

There’s also a signed limited awesome group for misc editions and a fine press group that specializes in smaller publishers that are out of my price range. I can’t afford the amaranthine and Lyra and even curious king (maybe base level for king). Nice to see though.

I check eBay once in a while. Rarely buy cause I frankly am unwilling to pay a premium most eBay sellers demand.

You can strike gold on Amazon marketplace on occasion if you check regularly. I got folio LOTR (the green one) for $45, 1984 (sealed) for $15 and the newer Hemingway 5 book set in the red slipcase for $25.

I have also bought maybe half a dozen books from Amazon listed as folio that I took a gamble on and turned out to not be. Amazon is thankfully easy with returns. “No, I did not pay $35 for the softcover penguin copy of Amerika by Kafka.” And I get my refund.