Costco has made a name for itself via its Kirkland store brand label, which often blows competing products out of the water. In taste tests, Kirkland brand vodka consistently beats the premium, much more expensive Grey Goose, and some even argue these products are the exact same vodka, just packaged differently.

A spokesman for Bacardi, owner of Grey Goose, claims that their "water source was carefully chosen for its purity and extraordinary quality, and no other vodka brands in the region have access." However, both Bacardi and Kirkland source their water from the Gensac Springs in France's Cognac region, which supports the "same spirit" theory.

Before you get too excited, know that Grey Goose vodka is distilled about 800 kilometers away from where Kirkland is distilled; however, spirits-tasting expert Fred Minnick says that "When you buy vodka, you are basically paying for someone's fat salary and the marketing associated with it." In other words, Kirkland is the best deal for your wallet, no matter what.