It's easy for an investor to compare same-store-sales numbers, but it's even easier for retailers to manipulate those numbers. For a true apples-to-apples comparison, try this metric instead. The Fool's Buck Hartzell explains in the following video.

Buck Hartzell owns shares of Apple and The Buckle. The Motley Fool recommends and owns shares of Apple and The Buckle. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.