thanks for all the comments. it wasn't the smoothest auction, i'm wondering if it was the seller's first time shipping internationally. i didn't click the fine print or details regarding the ebay global shipping thing and i'm not sure if the seller did either. after i paid he sent me a message saying 'i thought you were in australia, paypal is showing a uk address', then i checked my account and my payment split into 2 amounts which didn't match the item/shipping price and only 1 was for the seller so we both freaked out a little haha.
the book in hardcover at least does seem to be fairly expensive and not readily available to international people on amazon and ebay. i ended up winning the auction at 2.75 pounds. i asked him if there were different options for postage as the ebay global shipping option was relatively expensive for the item. he went to the post office and the quote was 8 pounds which was half ebay's price, so i paid 10.75 pounds. the money isn't the issue, if i was to ask for a refund it would basically be compensation for being misled.
he didn't mention the tear or stamps or anything even after i specifically enquired about the wear and condition, just added a couple of photos of the closed book. so aside from the original listing there was a second opportunity to mention the damage and he didn't say anything.
i know it's not much and flicking through the book the rest of it seems fine it's both the principle and also the collector/ocd aspect of every time i look at it i would feel dirty and ripped off haha. there is definitely a part of me that wants to get rid of it and try my luck finding another one. how stupid is that... :/
i think i will send him a message first with a photo and tell him i'm pretty disappointed. i'm not sure if i will ask about the possibility of a refund or wait for him to respond and see if he offers.