Just purchased a number of books for work, on statistics and HTML from Amazon.com. The sad thing is not only did the books get to me quicker then if I had order it through the local book store (about 20 days) but it was over half the price!
The HTML / CSS book I am reading is part of the Head First series. These books are fantastic because they tackle dry boring subjects in an entertaining way. For example in the book on statistics they use an example of a woman who loves high heels who will only date men who are taller then her when she is wearing her high heels.
The book on HTML and CSS is Head First HTML with CSS & XHTML
Again, a dry subject, but very well done.
Cheapest price in Australia was $55, Amazon.com price - $35