I think if you want to email and try to ask for a partial refund you can, but like other people said here, it could be too late,after you already left feedback. It might also seem a bit confusing to the seller as you were happy and now you are not.
From looking at the auction it does to me look like there is damage on the two bottom corners, even without close up pictures. For me when I see any thing in auction pictures that looks a bit off I always ask for more and if the seller doesn't send them I don't bid.
I think you should just put it down to a lesson learned and move on, you can try to email the seller, but I think unless they are super nice it will be a long shot to get any money back from them after feedback is left.
From looking at the auction it does to me look like there is damage on the two bottom corners, even without close up pictures. For me when I see any thing in auction pictures that looks a bit off I always ask for more and if the seller doesn't send them I don't bid.
I think you should just put it down to a lesson learned and move on, you can try to email the seller, but I think unless they are super nice it will be a long shot to get any money back from them after feedback is left.