I just checked at nowinstock, and apparently it's not just on Amazon that the PS4 has supply issues. While both the slim and the Pro are available there, it's just the 1TB slim and the white Pro, all other models are sold out there too according to that site.
So either the retailers didn't order enough consoles in wake of GoW or there's some issues on the supply chain at Sony's side. With the problems in Japan earlier this year it seems like it's more a problem on Sonys side
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/
