I'd like to ask you how much it will cost if we want to publish the black and white version of the book. Could you please give us a quotation? Because the cost of color-interior is a little expensive, I wonder if black and white books are cheaper. But we hope that the part of the card is still color, only the part of the inner page is black and white. It seems that there are similar books published in the United States, such as Doreen Virtue's card book, Archangel Oracle Cards. We hope that we can make a combination like her card and book.