Treat Your Poker Like A Business bySchmidt: Schmidt: Amazon.com: Books

The above link is the expensive version. (2009)

Amazon.com: Treat Your Poker Like a Business (9781580423113): Dusty Schmidt: Books

The above link is the cheaper version. (2012)

Same author, same title, different years and prices. Please if you can explain the difference hook me up cause I was going to buy one but then though I should have more info before investing. Is the cheaper one an expansion upon the 1st publication?