In the words of Dr. Egon Spengler, print is dead. Or at least it’s one step closer to that great library in the sky, according to Amazon’s announcement today that the third-generation model of their electronic reader, the Kindle, is now their biggest selling item ever, pulling ahead of Harry Potter and the Deathly Hallows, the previous title-holder. While the e-tail giant didn’t give out any concrete numbers, it’s likely that the relatively low $139 price tag helped to move a lot of units over the holidays. According to Amazon.com founder Jeff Bezos, the e-reader also did not experience the kind of competition from the iPad and other tablet devices that people were expecting because owning one does not obviate owning the other. “We’re seeing that many of the people who are buying Kindles also own an LCD tablet,” Bezos said in a statement. ”Customers report using their LCD tablets for games, movies and Web browsing, and their Kindles for reading sessions.”