Spending money everyday in a shop to get your fix can add up. Check out this chart published in the WSJ (put together by Mint.com) to see which city racks up the biggest bills. Look how much more Seattle spends. As a transplant from the Pacific NW I can tell the two biggest factors in those numbers are the weather (miserable) and number of places to get coffee. You can't go more than a mile without hitting a coffee shop or drive-thru coffee stand.
The article is about saving money and one way would be to buy your beans from a local roaster and make that latte at home.