These AMD 5xxx series have been impossible to get a hold of, but the 5800X has been in stock for over an hour now.
It's not the most desired of the 5xxx series, but it is a beast of a CPU either way. I would recommend the 5600X to most people, it's a bit cheaper and performs extremely well according to reviews.
This is the first time I have seen one of the new AMD cpus in stock for more than 1-2 seconds.