前一阵收到一封信，Dear Wenke Ruan, I am writing on behalf of the International publishing house, LAP Lambert Academic Publishing.In the course of a research on the Beijing University of Agriculture, I came across a reference to your work in the field of Animal Science. We are an International publisher whose aim is to make academic research available to a wider audience. LAP Publishing would be especially interested in publishing your dissertation in the form of a printed book. Your reply including an e-mail address to which I can send an e-mail with further information in an attachment will be greatly appreciated. I look forward to hear from you 结果他又发了一封，问我收到信没有 无奈我给他回了说 Thank you for your interest in our work, please provide the detailed information about your services.结果它今天又回了长长的一封，说没有出版费，还给12％的卖书费（the Publisher agrees to pay the Author a royalty commission based on the Publisher’s revenue minus the contained value-added tax of 12 %. ）这是啥情况啊？