Just watched the first episode last night - They better be making more episodes.
Very interesting take on the PKD story (for what it's worth, The Man in The High Castle is one of my favorite things he ever wrote in a catalog of works that is exemplary).
For those that haven't read the book, it's a sci fi alternative history where the Axis won WWII. PKD wrote it in 1963, and while it didn't break the ground on alternative history (HG Wells invented that concept in The Time Machine) it set the standard others follow. If you haven't read any PKD, I can almost guarantee you've watched his stories turned into movies: Running Man, Blade Runner, Total Recall, Minority Report, the Adjustment Bureau, and the list goes on and on (which is sad, because he lived and died not having gained much financially by his talent).
If you have Prime, it's worth a watch.