I did actually eventually manage to get one off Newegg yesterday, for real. I had similar experiences to you some of you guys before, where I could add it to my cart, but it wouldn't appear, I would get all the way to the "congratulations on your purchase" screen, but find the order hadn't actually gone through, but yesterday, I did actually get one; it's in transit.
So, don't give up on Newegg; I found mine after getting a text alert from nowinstock, (after like, four that had led to those aforementioned scenarios) so it worked eventually. My Amazon preorder from the 6th still hasn't yielded anything ("delivery date pending").