Since its such a great idea, but uses mostly off the shelf parts and doesn't require much specialization, its a perfect target for them.
Look at the patterns: They quickly cannibalize and eventually completely commoditize the market for easy-to-copy products by flooding ebay, amazon, aliexpress, etc with comparable but cheaper items, some of which are probably going to be made by your own supplier/factory in China. Eventually the best of these these get on Engadget or Gizmodo and that's it.
Examples: Android tablets, Google Cardboard, Android Phones, Phone Batteries, etc.
Certainly many will have inferior packaging and engrish manuals. But some will be good enough or better than your product... I would be terrified to base a business around this type of item.