Hi buddy a friend of mine had the same problem as you last year, he bought a rolex Milgauss rep from whom he believed was josh at pc8838 but turned out it was from a website claiming he was josh, he got the watch and it turned out to be eaactly what he ordered, when he had the back removed it also had a Swiss eta inside which he had ordered.
Like shiro said its probably a legit dealer just using josh's reputation.sit on it for a while and see what happens, I'm sure you'll get it