How much does it cost to print one page of the album?

How much does it cost to print an album? How much does it usually cost to design a page? At present, the charging standard for photo album printing is calculated by P, which is generally 30~ 100. Calculated by p, it is generally 40~ 100. Because a piece of paper is 16, that is, 2 10mm times 285mm, the format of 285mm is 2 16mm× 1092mm, which may be 3.5 times different, that is, the area. If the price is calculated by the square of two P's, it is actually the price of three P's. If the price is calculated by the square of two p's, then the price from 2 10mm-285mm is 420 mm× 1092 mm, which is generally recognized as the price range of common picture books, that is, the number of pages to be printed in picture books. If you use the conventional calculation method to calculate, you probably need to calculate a P for every P, so picture books are generally more than 20 pages. This painting. I think it's best to charge with 16p.