I bought this book at it's full price at about £20 and must say it's worth every penny, the book looks at the 'rough' sketchbook work of a good range of different street artists/illustrators, the art work is divine and quirky and each artist hs writen their own interpretation of what sketchbook work means to them, purely delightful and personally i think because it's sketchbook work it feels like you're more connected with the artists way of thinking and working.