A. Familiarize yourself with eBay's policies regarding seller cancellations. If you encounter a situation where a seller cancels a sale, check the listing details for any stated conditions that allow for cancellation. You can also review the seller's feedback score to gauge their reliability before bidding.
B. If you experience a cancellation, keep a record of the transaction and any communication with the seller. You can report the issue to eBay through the Resolution Center if you believe the cancellation was unjustified.