Thanks for your replies! I actually posted this in the "Questions" section of the forums as well. As it turns out, there's a UK law that states I have to accept refunds on earrings sold online - something to do with the buyer being able to see the product in person, which is why high street shops can refuse returns on earrings. So, I've changed my policies to reflect this - although I still won't be re-selling any returned earrings that I get! Hopefully I won't have to deal with this though :)