Honestly I expect this to be sold out everywhere very quickly.
If the performance is as good as AMD have shown, then for what looks like the same/similar performance as a 1080Ti/2080 for cheaper than either of them are brand new if you wanted to buy today, then I can see alot of people buying one to get away from nVidia.
I have a 1080Ti and I have no intention of buying an RTX card or even buying this card from AMD, but if this is a pre-cursor to what there next cards are going to be like then AMD are really starting to get back in to the high end market and it's only going to be a good thing.