Same thing here. Gamestop's business model serves absolutely no purpose for me. They'll be gone or morphed into something completely different in 10 years. Their recent "we'll sell you DLC cards at our store" WTF moment is proof. They're more irrelevant every passing day.
Amazon = free shipping to my front door, no tax (for now), discounts, free game credits, and any game I could possibly want on release date with no special trips to "pre-order".