Amazon offers the Minecraft Blockopedia Hardcover Book for $27.34. Coupon code "HOLIDAYBOOK" cuts it to $17.34. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) Outside of the seller below, that's the lowest total price we could find by $5 and the best deal we've seen for this book. It contains trivia and properties of the blocks in Minecraft as well as strategies for beginners and experts.
A close price, Nano-Mini via eBay offers it for $16.99 plus 99 cents for shipping.