Why is the sizzling duck so cheap?

The cheap roast duck is not the live duck sold in the market or the fresh duck that has just been slaughtered, but the very cheap white-striped duck. White-striped duck is meat duck that has been processed, with duck feathers, internal organs and surface cuticles removed, and is pre-packaged and sold directly. According to the owner of the farmer's wholesale market, a box of large white-striped ducks costs around 140 yuan per box, with a price of around 140 yuan; a box of medium-sized white-striped ducks costs around 80 yuan per box; and a box of small white-striped ducks costs around 80 yuan per box. The box can hold 10 pieces, and the price is about 80 yuan. In other words, if you buy the smallest white-striped duck, the cost of a duck is only about 8 yuan.