Haha, don't worry. I 100% guarantee that this is new and has a whole $15. I got it for free from a promotion at a store, and I have no need for it, so I'm putting it up for auction. =)
Well, if you know how iTunes cards work, then you should know that there's a code on the back of the card that you enter into iTunes, which then will put the amount that's on the card into your iTunes account balance. I can either mail the actual card, OR email the code that's on the back, whichever you'd prefer. =)
I always suggest email for codes. It protects the seller AND the buyer from scams. If you mail, they can use the code and then say you sent a bad code OR a seller to could mail a bad card and the buyer would have no way to prove that it came that way. SO ALWAYS email and only bid on auctions that will email. Its a simple rule that will help you avoid scams.
I could definitely email it if someone out of the country wins. The card was bought in the US, and iTunes only allows you to redeem cards that are bought in the same country as where you live. There are a couple of ways around it, such as using a proxy server, having a united states address in your iTunes account, and/or an american billing address. I haven't tried this myself, so only bid if you're willing to risk it.