Update: Well that was fun, seems like it no longer works on consoles. Hope you got one!
GameStop appears to be offering a 10% off sitewide coupon with code TY10, and at least for now, it works on consoles. That means you can get the PS4 Pro for an unprecedented $315, or an Xbox One X for $450. You can also try it on already-discounted Xbox One S bundles, or the PS4 Slim. It wouldn’t surprise me if they kill this very quickly, so act fast. It even seems to work on the Switch!