Templates are not a difficult part of the d20 System to create. The value of this product is that here are a small book's worth of templates already worked out.
Some of the templates have "someone else's campaign" written all over them, and some others are 2e conversions or inspired by defunct TSR campaigns (which isn't a bad thing).
I can see why some buyers would be negative about the book, since once one reads through the templates one is left with the slight feeling that this is something one could do for oneself.
However, the book and its contents are high quality and inspiring stuff. I know players in our group who will use this book for pets, monster cohorts and even monster player characters. That alone will make this book worth a vast multiple of its sale price.
A solid product, at the right price.