The 105 is an excellent air brush. I have one and could not be happier....dual action, easy to use and made in America.
It really is one of the go to brushes, especially for a beginner (which I am assuming you are but my apologies if not) and at that price it's a good deal. Also, beginner does not mean low quality or that you will outgrow it, etc...I mean that it works great, is easy to clean / assemble / disassemble and the tip is a great size for fine detail but is not as easy to clog as the smaller tip brush.
On top of that Badger is a great company to deal with on the off chance something does go wrong.
Also, ferret's advice is good for both Chicago Air Brush and the other accessories.