As a bitcoin holder you're getting yourself a discount on purchases through sites like that because the people doing the amazon purchases are using stolen cards or stolen accounts.
People who have bought through sites like these have often found amazon refuses to honour warranties etc on the purchased goods, and when they've dug a little deeper it's been because the real cardholder or account holder has flagged the transaction as fraudulent.
People who have bought through sites like these have often found amazon refuses to honour warranties etc on the purchased goods, and when they've dug a little deeper it's been because the real cardholder or account holder has flagged the transaction as fraudulent.