I think the consensus is that it is remotely accurate.
Based on what I've read, the whip holder has velcro, the holster is a little small (which is only a problem if you plan on putting a fullsize gun/replica in there)... Basically, it looks decent for a fairly good price, but isn't the best you can buy.
Todds Costumes has similar/better offerings for more money, and others seem to like Lee Keppler.
With regard to the Ra headpiece, it is not accurate. The most obvious thing is that the writing around the edge is the same on both sides, which of course wasn't true for the movie piece. That said, it is cheap and if you just want something to display/carry around at cons, you could do worse.