My findings (Ebay and Amazon)
-If you're willing to spend $400, you can get one for sure and brand new. It will be 500 gb
-If you're only willing to spend under $300, it's going to be a lot more difficult. Probably not controller and used.
I bought one used yesterday and got lucky (thanks to help from Goku1992) $275 + $27 shipping + tax. No controller 1 TB on 5.05. But I have a strange feelings I'm not going to get it. The seller sold 4 PS4s all the sudden in the last day, and they never sold one before, and it's been a day and so far no indication they're going to ship. I hope I'm wrong and they ships soon but if not I'll be looking for another one.