Sorry, probably sounds like a dumb question, but I haven't bought anything on eBay in years and years. In fact, I had to create a brand new account to buy these because I hadn't used my old one in so long that they cancelled it.
Anyway, I see a "Request Return" button there. I assume you hit that. I also see "use return label and we'll charge you $10.15 if you do." Is that what you did? I don't recall seeing any. Now I'll have to hunt down the packing materials because it seems like my wife did something with them.
I don't recall paying but yes essentially that's it. Should be a usps label. I used the box they sent them to me in.