The charges to convert the Kindle book is based on the number of pages of the book, size of pages, how many images, file formatting, forms, tables, bullets, how many column text, color background to text etc. We have to see the book if it is eBook to quote you for conversion. We usually convert to 99% similarity compared to the original file. We need to see the file to inform you of any conversion restrictions, if any to meet the Kindle file format requirements.