Same here; I've explained to my wife that I love Costco, but their Achille's heel is that they don't have any Coors. They do have great deals on local craft brews though, the one near me carries a Two Brothers variety 24 pack, for about 24.99. Not bad, but I like to buy my cheap crap beer in bulk.
Primary 1: Bellingham Saison
Bottled/Kegged: Cascadian Dark Ale, Belgian Tripel