a damaged goggle from ebay seller

I purchased a safety goggle for Red and IR wavelengths from a famous ebay seller, zone2stealth. Unfortunately, it arrived broken frames around blue filter glases at many points from both sides because it was not well packed. I sent the pictures to the seller, he told me he can send new one if I sent it back to him. I asked him also for return shipment, at the beginning he said that it might be free, but after a few email between us he started to tell me that I have to pay this shipping cost, which costs 15.5$ a registered one from Italy to Hong Kong. It is a quite high cost for me. I complain about this to seller because basically this is his mistake sending the goggle without an enough protection.

I checked the internet, but I could not find a clear thing who takes responsibility about damaged arrives on Ebay. Do you have any experience and suggestion for me? Thanks...