Ingredients are getting more and more expensive, but some products are half px

ootamay

Ingredients are getting more and more expensive, but some products are half price

Recently, many ingredients have become more and more expensive. What is the reason? Are these real reasons? They really know it themselves.
Today I saw that the prices of many restaurants are more expensive, about 10% increase in price, such as KFC, cha chaan teng, etc.
But some other products are competing in price.
Such as a chained herbal tea shop, they offer "buy one get one free",
The soy sauce in the supermarket is also buy one get one free.
/03 2023