GNC stores are hit and miss it seems and the SeaTac Mall(sorry, I refuse to call it «The Commons») location is a sorry location. First off, it’s a glorified walk-in closet. If there is a smaller store in the mall I’d be genuinely surprised. That said, as you could likely imagine, their selection is fairly limited. No major deals on clearance items like some of the better stocked and friendlier GNCs often have(Supermall location). And second, every single time I’ve entered this location I’ve interrupted/irritated the girls«working» who’ve had to end their cell phone calls and hold down the fort(stand at the register and look bored). Avoid this location. Small, cramped, poor selection coupled with poor service. Not of course that you ever need their advice, but getting irritated glares for simply browsing… there’s no excuse for that. Go to the Supermall location. It’s about 2.5 miles away and it’s literally twice the size, they have a typically helpful staff, and the best part, they ALWAYS have clearance sales where I’ll get RTD shakes for$ 1.15 a pop or meal replacement bars for typically under a buck each. Time to stock up. Just not at Federal Way.