Yes, my blurays have always come sealed with annoying plastic wrap

(altho I don't think that's any sort of guarantee its official....anyone can buy such sealing equipment afaik, let alone equipment to record bluray).
What country are you in? Hard to imagine Amazon wanting to sell pirated/bootleg copies, have you contacted them? Not familiar with DVD Empire.
I don't use bluetooth hardly at all, but it was in the car for the most part....but there are a variety of bluetooth codec quality levels, too. I do see the effects of streamed movies being a bit reduced quality compared to a bluray, tho (why I prefer to own the disc for my favorite flicks). I've seen some pirated downloads that aren't up to snuff, particularly the audio track, and sometimes seems more dvd video quality.