Since the Chinese don't give a $^@# about intellectual property, lots of the parts are exact copies of the expensive stuff. I bought two Ebay cages that turned out to be identical to $70 Look cages. They're clearly either exact copies, or they're made by the contract manufacturer who's making them for Look... and just making more and not labeling. All bets are off with Chinese manufacturers.
And when I say the Chinese don't give a $^@# about intellectual property...