I don't work there but am a frequent customer. I have donated and sold a wide variety of books at Reader's Corner. They also offer store credit toward purchases for books. Professional books are accepted as far as I know.
Yez
Readers Corner will typically accept any book for donation provided they're in a condition that others might use them. Most outdated specialized books will likely end up outside in the nighttime $0.25 or $0.10 sections; the money received from these honor system donations is typically given to local public radio stations.
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