Just opened a second book received today. This time it was wrapped perfectly, but the book itself is a travel guide with highlighting and underlining on several pages.

I'm pretty sure this is a valid RWAP and is due a refunded credit, but I just want to clarify. And, no, the sender did not tell me about this before hand or ask for an exception as is sometimes done.

Thanks again.

Yes, ANY book with writing is supposed to be PM'd first and accepted BEFORE mailing. Doesn't matter what kind of book it is.

So, you can RWAP and ask for your credit back.

Just so you know, though, PBS does say that travel books (along with textbooks and cookbooks) can be "expected" to have writing in them.

However, that doesn't mean that a sender does not have to PM about it anyway.

They do. It's required.

Yes, it took me a while, but I just found this in the Help Center. Thank you so much!

Yes, it's in the Help documents.  IIRC Travel Guides are covered under the same rule as textbooks and cookbooks.  If they do not meet basic PBS swappability guidelines (due to highlighting, margin notes, etc) the sender must contact the requestor, submit a description of the book condition, and receive permission before mailing the book.

You have grounds to RWAP and request a credit return.