According to the rules of online trading, except what the seller promised, all the service fees are borne by the buyer. If it is not the quality problem of the book, the service fee is not refundable and needs to be borne by the buyer.

But if the book received is seriously inconsistent with the description, quality problems, etc. The buyer can negotiate a refund with the seller and let the seller bear the service fee. If the seller does not agree, you can also apply for transferring customer service intervention and write your own requirements clearly. In general, the customer service's handling opinions are the final solution.