eBay

I shipped an item internationally that was damaged by shipping. I fully refunded the buyer on my end, but they are upset because they paid $50 for shipping (through Ebay international). What steps do I need to take to make sure the buyer gets the $50...

Buyer did not include full address and the package was returned. We agreed on each of us paying half of the shipping to send the package again. How do I charge the buyer their amount?

Does a buyer have to pay taxes on gift cards? I am selling one and a potential buyer is asking