Update! This offer expires at midnight EST on 9/7! Sign up for the Discover More Card to get a 0% APR for 15 months on purchases and a 0% balance transfer for 15 months. This means you can transfer your balance from a higher-interest credit card or make a big ticket purchase and pay no interest until very late 2013. There is a 3% fee applied to any balance transfer. There is no annual fee for the card, which also earns up to 5% cash back.