There are a lot of these Android type boxes around, too many.
Sounds like this guy is buying these devices at a cheaper price, putting free software on it and charging you more. Good in theory if stuff works, but bad when you waste too much time figuring out how stuff works.
IMO they aren't very user friendly and too hard to use. You'll easily get frustrated with all the bad links and stuff that aren't reliable. You are better off going with a HDTV antenna and getting over the air channels for news and local channels.
I stick to playing local downloaded content for TV Show and Movies.
Should you have some type of media player? yes! Is it enough or reliable enough to cut off cable completely? Upto you to decide, but I've still kept basic cable for my wife. Me, I couldn't careless about Cable TV.