La Crema Sonoma Coast Pinot Noir

La Crema Sonoma Coast Pinot Noir - $16.99 at Costco.

Tinto de Toro for $9.89

This looks to be a special buy at Costco (based on the .89 price) which means it won't last long. 93 points from Robert Parker and a Bulk Buy rating from The Reverse Wine Snob. Other retailers are selling this for as much as $24.
Yaso Toro 2012 - Yahoo!

2011 Tractor Shed Red

May be tough to find but grab it if you see it. Over-delivers for around $8.

Dry Creek Valley Zin

It doesn't get much better than the Dry Creek Valley Vineyard Heritage Vines Zinfandel. Just spotted for $11.99 at Costco.

Cline Cellars Syrah

Here's a really nice, inexpensive ($10) Syrah that can be found at times at Costco: Cline Sonoma County Syrah 2010