Transformers Vault went on sale today. Don’t know what that is? Well, its a book that Hasbro has been teasing us about for almost a year now. With some exclusive access to some Hasbro resources that have not yet seen the light of day, the book is sure to be a must-find for Transformers fans. Don’t believe me? Check out the video above and click the link to buy and help the site out at the same time!