It is, Microcenter has tons worth of cards on hand. There was plenty of supply, notice it's only OOS from online vendors? You know those that are susceptible to scalping bots who are hording the cards and going to be reselling them on ebay or amazon at crazy markups.
Just wait, scalpers / resellers just sucked up all that inventory and now have to move it. There is going to be a wave of cards showing up on ebay / amazon at $300+ markup. As AMD releases more, and what little nVidia bothers to make, the scalpers won't be able to suck up more inventory and the prices will start to go down. Basically it's a speculation bubble that is being fueled by low stock vs demand. As stock keeps pouring in that curve will stop being so lopsided which brings converts the bubble into a bust.