Sign up to receive double quarterly ExtraBucks rewards at CVS this fall from 9/16 to 12/15. You will need to have your ECB card number handy when you sign up. This means that instead of the usual 2% back, you will earn 4% back this fall quarter. I just signed up and see that I am close to getting $2 for my 2% back from the summer quarter. Why have I been spending more lately at CVS? Hmmmm….