$2 dollars more expensive, 200+ pages and 50+ recipes lighter than my last Pragmatic Programmer ebook purchase of this type; Rails Recipes.

Also, a few of those recipes I wouldn't consider "after the tutorial" material judging off chapter title alone. Like namespacing and view templates which are covered and covered again across material from the likes of the PeepCode or BackboneScreencast tutorials. But again, that's just judging from chapter titles I haven't read it.

That said, it does seem very valuable but I think the price point is off compared to other books of that type, and other Backbone learning material.