No book shipped, Abe Books won't help
USPS has been "awaiting item" for over a month. Three efforts to contact seller (Half Price Books) failed. Abe Books refused (via automatic reply) to initiate refund saying "the seller says it shipped, so talk to them". No way to contact Abe Books, no way to get refund, no book, and I am out $15. Lesson learned: never buy through Abe Books