In-Depth Bobbins the Cat Tutorial: Mastering Colored Pencils One Step at a Time (In-Depth Colored Pencil Tutorials)

The whole In Depth series drawing book has less than 10 pages of content (yes, I bought almost the whole series), featuring one single animal that you see on the cover. And it charges like ~20 dollars. Are you serious? And the instructions are not even that detailed and helpful. Other similar colored pencil books, featuring 15-20 animals, with more useful and helpful step by step guide, sells like 25 dollars. Publishers, do you honestly think your target customers/buyers are that stupid?