The reasons why calotiykione is cheap in Hong Kong are:

1. Calotiykione is made of synthetic fiber nylon cloth and is relatively cheap.

2. In terms of workmanship. Hong Kong calotiykione is not handmade, but mainly made by machines, which saves labor costs and is sold at a cheaper price.

3. Material and workmanship. Kiehl's was founded in Manhattan, New York, in 1851. In the early days, Kiehl's acted as a typical 19th-century pharmacist, providing New Yorkers with potions and ointments extracted from natural ingredients.

I hope the above information is helpful in answering your questions.