Upload & Sell: On
If it is possible, you may want to contact eBay again. I know that a lot of this dispute stuff goes through some kind of automated system and it is hard to talk with anyone. But your experience does not square with one that I had - something sounds fishy. I purchased a lens several months ago from someone who appeared to be reputable. The lens was supposed to be in perfect condition. When it arrived, it looked like grease was smeared all inside the lens. The seller sold it with no return, but when I went through eBay with a dispute on the condition of the item, the seller said that she would take it back and upon receipt, would refund my money. Here is where things diverge from your experience. There was no prepaid shipping label and I had to spend my own money to send the lens back - and it had to be insured and with a tracking number (I would have done this anyway). Once it arrived, she did refund my money, but I was out the cost of shipping it back. It seems very strange to me that, first, they sent you a shipping label (you might want to check on who actually sent the label), and two, that eBay has sided with the seller and is intimating that you will not receive a refund. Keep track of the shipment and when it arrives. Contact eBay again. Their emails can be nerve-wracking because everything seems so uncertain. If they side with the seller, try to have eBay review the case again. Usually, eBay is more concerned about pleasing the buyer (and some sellers get ripped off because of this).
Good luck. This kind of thing is incredibly frustrating.