This book is great as a warm up before tackling the chapter in Robbins. The cartoons, mnemonics, and easy tone make pathology a little less intimidating.
I would read the chapter in this book first, and it made reading Robbins much less overwhelming.
I would not use this book as a primary source for studying path, but it has turned out to be extremely valuable in helping me really understand what I'm reading. It clarifies all those little things you forgot from first year that you need again for second year.
For the price, and the frustration it will save you when learning path, I would say this is a good buy.