What happens with a lot of the Chinese assembly companies is that they get a contract to manufacture x,000 units for their customer. They then make a few extra and sell them for less. So you are buying the same thing but not through the normal channels. It happens a lot with radio equipment, you can buy a Kenwood or Icom hand portable radio or you can buy something for less than half the price that looks identical except for the label saying what it is. In fact, they are identical internally and made on the same production line by the same sub contractor that makes the brand name ones.
Been out and checked my Creader and it still works.......