So my latest Book Depository delivery arrived today, and the postie very kindly left the package sitting out in the rain. The book was packaged in cardboard only and has been damaged a bit - still readable, but the pages and back cover are all wrinkled and some of the pages may stick together as it dries. Do you think it's worth attempting to get some sort of refund or replacement from either Book Depository or Australia Post or am I wasting my time? Does anyone know if it's possible to request any future deliveries are packaged in plastic as well as cardboard?

Not Book depository's fault but I would DEFINITELY lodge a damage complaint with Australia Post

Yep complain to Australia Post... your 'kind" postie should have left it in a safe (from weather, animals or theft) spot OR left a calling card...

Australia Posts fault. I would be claiming through them. It was their workers negligence that caused the damage. ie: the silly flip left it out in the rain.

Australia Post is at fault, but don't expect a good result. They are an absolute pain in the rear to deal with and honestly not worth the time.

This happened to me and book depository replaced it for me free of charge

I agree that it is AusPosts fault, however if you let them know Book Depository will offer you a refund or send out a free replacement because their customer service is fantastic!