Books.com.tw is having a sale until March 31st. Here are some links to the English books that are on sale. 
Literature, classics, url=http://www.books.com.tw/exep/activity/2012/01/2012exhibition/category.php?order=1&page=1&discount=70&category=00020001 sciences[/url], living/traveling, children’s books, and teens and young adults.