1. I have a book that the top outside corner of the last 70 pages or so are wrinkly like they got wet; I'm not sure how this happened so I'm assuming it's water. There is no smell, no discolouration, no stains, just wrinkly. Is the book postable?

2. I did a BoB trade back in the begining of March. I have recieved my book, but the other person hasn't marked their book recieved. I've PMd this person twice asking if maybe they just forgot to mark it, or if it hasn't come yet would they like another book, credit, etc. I haven't had a response to either message. Any thoughts on this?

TIA

1. No. You can't post a book with water damage of any kind.

2. You can just ignore the pending BoB, or you can send feedback asing if the other member is still active.

Not sure what to tell you about the BOB transaction. If they are no longer a member, maybe you can ask PBS to mark it received for you.

Water damage is not postable. Even if it's minor.  You can offer the book as a freebie with an order from your shelf. But it can't be posted for a credit.