Wine.com: 5% to 38% off select wines, deals from $9 + $13 s&h
A best bet is the Conundrum 2010 California White Wine (pictured) for $19.99 plus $12.70 for shipping. That's $5 off and the lowest total price we could find. It features spicy flavors of apricots, honeysuckle flowers, citrus fruits, vanilla bean, and gingersnap cookies.
Note that Wine.com doesn't ship to many states; check its site for more information on shipping to your state.