It an Asian thing, I guess. I was surprised when I came to Japan that many women carry the paper shopping bags from any nice brand as an extra handbag for their things. It's a nice way to recycle and (like so much else) another way to show off status. I'm not surprised at all that someone is selling fake versions of these bags.
Fun fact: canvas tote bags from Dean & Deluca are very popular. Funny because it's just a deli (I think) and not a "luxury clothing brand."