Same as how apple used to sell out in the first few weeks. People tend to buy what is in high demand / sold out cause we are simple pack creatures. We follow the crowd, we desire that which is scarce. See the S26 tins barely moving, the Nan, the Karicare milk formula all barely budging. Once new product launches it will be a flurry of sales in the first 3 months which should add to the bottom line. When it is no longer scarce we no longer desire it.