A cousin of mine just started drinking wine but lives in the suburbs of LA where there aren't many good wine stores. I've directed him to a few good stores in the area, but they're both a long drive.
I'd like to suggest some daily drinking wines to him from Costco, since it's easy for him to get there. Something like a Francis Coppola Claret, which is reasonably priced, fine for every day drinking, and almost always in stock at Costco. I can't go with him to help him choose, and I know that there are regional variations so it wouldn't do me much good to go to the store near me and write things down.
What do others like in the $10-20 range? He tends towards cabs and merlots.