From what I can see online, these books are beautifully made and a credit to their maker. I used to teach Art and did a little bookmaking/binding but certainly nothing to compare with these. I can honestly say that for the work, materials, time, expertise, tools, imagination etc that has gone into the creation of each one they seem to be pretty cheap even at $100 or so!
If you fancy trying your hand at making your own book, there is quite a lot of information on the net, you don't really need a lot of specialist tools (ie, you can make do with a couple of bricks instead of a book press).
http://www.cs.uiowa.edu/~jones/book/ this site gives some good information, simply use plain or ruled paper instead of photocopies or prints.
http://www.sheilasummers.com/index.php?id=1,0,0,1,0,0 - some great information here too
http://www.philobiblon.com/tutorials.htm and a whole host of links here