Is there a such thing as fake blu rays

[thegame]

Like I've seen a bootlegs blu rays...but today went to the flea market and this one store was selling blu rays at prices that will make u waste your entire pay check. I not sure but they lady had a stack of blu ray movie wrap in plastic then the covers with the pictures..which she would insert the disc in. I've asked for war a movie which i brought at futureshop. the Cover and disc looked legit like everything from the all the pictures from the cover looked like the real thing. I asked her if she can play it and it seem legit like the pq was bluray....but i didn't buy anything...was wonder if they were bootlegs or the real thing because i've never seen a wholesaler with a stack of movies not in the cover and sealed?