The minimum number of pages for a perfect bound book is 24. You will have to select one of the other binding styles if your book contains less than 24 pages. Since we print both sides of the page, this means that a 24 page book only has 12 sheets of paper. You also have to have a minimum of 60 pages perfect bound before there is room for printing on the spine. The maximum number of pages in our pricing calculation is 700. (For perfect bound, 8-1/2 x 11 inch books, the maximum size is limited to 245 pages. For case bound, the mininum number of pages is 50. 8 x 10 case bound books can not be over 410 pages.) For orders with more than 700 pages or more than 5000 books, email for a price quote. Covers can optionally be full color, but all content pages are printed in black ink only.