My dad had a similar experience. His very obscure, self-published, out-of-print book was showing up for something like $1000, while at the same time he was mail

My dad had a similar experience. His very obscure, self-published, out-of-print book was showing up for something like $1000, while at the same time he was mailing out free copies to people who emailed (plus shipping), just to make more room in the garage.