DD is in High School. My prize "catch" was an English textbook I was about to pay $20 or 25 for it and she was going to need it soon. For some reason, one day I checked the prices on Amazon 5 or 6 times. At about 5 P.M. I checked and BetterWorldBooks had come in and listed it for one cent plus $3.99 shipping in the USA. I have purchased other books for one cent or close to it, but that one was a catch. The English textbook was in very nice condition.
I have begun using Bookfinder.com when searching for textbooks for DD.
Yesterday, the delivery truck for our Receiver/Forwarder in Miami arrived with a 16 pound carton containing 4 textbooks for DD. The most expensive was an Astronomy textbook published in 2014. It was $27.20 including shipping to Miami. That textbook is normally used in colleges and it does have an unused Access Code. It came from GlenTheBookSeller in "Chicagoland" and was purchased on eBay. It had previously been a Rental book, in a CC in the state of Iowa.
Two of the books were purchased directly from Thrift Books on their web stie. I believe both came from Books Squared in Dallas. One was listed in "Very Good" condition. It should have been listed in "Good" condition. The other book was listed as "Good" and could have been listed at least "Very Good".
One book was purchased from BetterWorldBooks on their web site and is in very nice condition. It was listed in "Good" condition and could have been listed as "Very Good" or "Like New". It even has a CD in it.
The book from Glen The Book Seller was shipped via DHL Global Mail which was very fast into Miami. The other 3 were shipped via OSM and also were fast into Miami.
RE: ACCESS CODES I made some comments about those to DD this morning and explained to her that when she is in university that if she possibly can, before buying textbooks or access codes, contact the Instructor/Professor and ask if the Access Code will be used and also if an older edition of the textbook is OK.
The Astronomy book DD received had been a Rental book in a CC in Iowa. It is the 7th edition. I suspect they are now using the 8th edition. As I told DD, it's somewhat of a Racket, the Access Codes and the Book Publishers obviously want to sell more new books and they push the Instructors and Professors to use newer textbooks.
NOTE: I have noticed that sometimes, buying from eBay is less, sometimes substantially less, than buying the same book from the same Seller on Amazon. Also the book may be much less on the web site of a Seller like Thrift Books or BetterWorldBooks, but sometimes it is more.