I posted some nice values at Costco from my last trip there. Search this thread for cabernet and it should come up.
Tres Picos, is you can find it is an outstanding Garnacha (Grenache from Spain). Worth more than the $17-18 retail and sometime I find it in the 12-14 range. Can hold for at least three years. Big explosive wine, more like a high end napa cab than a spanish red. very fruit forward, but great structure.
Ferrari Carrano Fume Blanc - nice Cal Sauvignon Blanc with a little oak ageing (very unusual fro a SB). Used to sell for 20 and fetched 40+ in restaurants. I picked up 6 bottles today for $10 each. A very nice wine for that price. The oak means you cna hold it a few years, which you cannot do with most SBa without losing some of their edge
Cuvasion or La Crema Chardonnay - Solid $20 chards I've seen around 12-14 lately. Could hold 2-4 years, maybe longer. Both use malolactic fermentation for a nice creamy texture, but still have the cripness I wile in my whites.Neither has much if any oak, which I am not a fan of in Chards.
Kim Crawford Sauvignon Blanc - A super, crisp wine bursting with citrus flavors- esp. grapefruit. $12-16. Can hold a year or two.
I'll post more when I visit my cellar or go shopping.