Regardless of the part of the counterfeit that replaces the genuine products, the price of the glasses is related to the following factors: 1. Brand: At present, the most expensive part of products is advertisement. A brand is widely recognized needs a lot of money to invest in advertising. It can be realized by accumulating slowly. This part of the investment will be transformed into a part of the price. Glasses of foreign apparel brands are paid to the brand in the form of licensing fees, which are also converted into a part of the price. 2. design: independent designer brand products, the designer's efforts and creativity not only beautify the decorative nature of the glasses, but also improve the comfort and convenience of wearing. Some excellent eyewear brands have invested heavily in this area, such as: OAKLEY, these will also occupy a large share of the price. 3. material: the difference in material determines the texture, comfort and durability of the glasses. ...