It is becoming cheaper and cheaper. When the cost is low enough, more consumers will buy and it becomes profitable.
Once people put out designs to buy for stupid things that teenagers like, it will fly off shelves. Print out your own cell phone cases or designs you can stick on your text books.
Also, you have tinkerers who will think it is fun to play with at that price.
All it will take is one killer product and everyone will start wanting one.