There is a famous doll scammer that has reemerged and is "buying" and "selling" pins. I will be using the pronoun It, since there's reports of several names being associated with them. It takes other people's pictures of items and uses it as its own to sell on Facebook. When that item is sold, It either uses your money to pay for an item on eBay or you unknowingly pay the eBay seller to send the item to It. You never get your item, or if you're the seller, you're out your money and item. So, I guess the only solution would be to watermark everything that's high value, that's your's from now on. If a buyer seems suspicious, like they want one day shipping, but delayed on payment until the last second. Or they want another person to pay for it. Don't do it.