Packt is having a holiday sale with $5 for any e-book and they have many Unity titles. I’m not affiliated in anyway, just a customer.
Those are pretty dirt cheap, but e-books…
Unity 4.x Game AI Programming
Unity 4.x Cookbook
Learning C# by Developing Games with Unity
Unity Shaders and Effects Cookbook
Anyone have positive recommendations for any of these titles? At that price I may get them just because.
Haha, awesome find!
Woohoo! Christmas comes early this year 
I haven’t read those PACKT books, but previously used some of their more basic Unity books, Unity Game Development Essentials and Unity 3D Game Development by Example Beginner’s Guide and they were quite helpful in learning Unity.
Hmm their website’s cart doesn’t seem to work. Darn it! btw, great find, been wanting some of those books for awhile now XD
EDIT: Must have been a glitch in the system. Bought the unit books! Woo!