Wondering if ebay could set it up to automatically record whether whenever a sale is cancelled, buyer and seller both have to agree on the cancellation. If they do, no problem. If buyer cancels the sale and seller disagrees, seller is out of luck but ebay can monitor how many times that happens for that buyer. if seller cancels sale and buyer doesn't agree on it, no calling ebay is needed, it is simply a strike on that seller's record.