(update: 50% left)
Amazon now offers a limited-time deal with 40% off the book “LaTeX Graphics with TikZ”, even significantly cheaper than the Kindle version – I’ve never seen that before. If you love TikZ like I do, or struggle with it like I sometimes do too, now is the best time to get the book!
Quick remark: the shipping costs in the screenshot are for international shipping from US to Germany where I’m at; I guess within the US it’s free shipping. Check out TikZ.org for samples. The TikZ pictures in the book are, of course, all printed in color.
And with the color-printed paperback book, you can get the PDF and EPUB for free at download.packt.com/free-ebook/9781804618233 – no need for the more expensive Kindle!