I recently sold a Toyota truck factory service manual on eBay, a large 800-page paperback. After he received it, the buyer sent me photos of the box and shipping label, and also a pic of a large cookbook I've never seen nor heard of, which he says was packed inside the box. He's demanding a full refund. There's no possible way I sent the cookbook and not the Toyota manual. This is the only book of any kind I've sold in months and I'm always very careful about such matters. Plus I've never seen nor heard of the book he says he received. But it seems like its just his word against mine. Does anyone have any good advice? I plan to call eBay to discuss tomorrow.