Are you crazy fan of Sachin who reads everything that Cricinfo publishes on him on their website?
Yes?
Don't buy the book then. Almost all of the memoirs or two interviews published in this book has already been published on the website sometime in the past (near or far).
However if you want to have a book for your bookshelf because Cricinfo has published it on one of the most accomplished cricketer of the world, then go ahead. Buy it and enjoy reading what other greats has to say about him.
And the book doesn't even cost much! :)

Happy Reading!