I recently bought a keyboard from an eBay business seller. Unfortunately the keyboard is faulty and I need to return it for a replacement. In the seller's T&Cs for the item they stated that they would "arrange a collection or send postage labels" for any faulty goods collections. However, in their most recent email they told me to return it at my own expense and they would reimburse the postage cost. My concern here is that once they've received the item they will "forget" about my postage costs. The keyboard is heavy and expensive, so my costs are likely to be quite high. 1. Is the seller under any legal (or eBay rule) obligation to pay for the return postage first? 2. If they refuse to pay for the return postage once they have received the keyboard, can eBay/PayPal take money from them and give it to me?