A seller may cancel an order before it ships; the buyer is refunded automatically. If a dispute is opened with the buyer’s card issuer, we’ll notify the seller and, where a dispute is resolved against the seller, the corresponding payout is reversed. Because a single checkout charge can cover items from multiple sellers, a dispute resolved against the buyer’s charge as a whole can reverse payouts to every seller in that checkout, not only the seller whose item was disputed. We may step in to help resolve a disagreement between a buyer and seller, but we’re not a party to the underlying sale.