Every professional working with downsizers, estates, and moves in Albuquerque has hit this wall: a home full of books. The family doesn't want to dumpster them. Goodwill won't take the volume. The estate sale company runs them at $1 each and leaves with half. A pod clear-out crew just throws them away. The realtor needs the house empty in three days. Nobody actually handles books as a specialty.
I'm the one who does. I know the book market — first editions, signed copies, STEM textbooks, regional New Mexico, cookbooks, leather-bound, antiquarian. I come out the same week (often the same day), evaluate on site, pay cash for anything with resale value, and take everything else off your client's hands in the same visit. Your client gets money they didn't expect, a cleared room, and the moral comfort of knowing the books didn't end up in a dumpster.
You get one phone number to call, a partner who shows up when you need them, and a story you can tell your next client.