What are the risks of online lens store?

The main risks associated with purchasing lens equipment online are as follows:
False parameters and quality hazards
Some merchants may falsely label lens pixels (such as labeling 1 million pixels as 8 million pixels), or refurbish and return equipment to the factory for resale, resulting in consumers purchasing inferior products.  ‌
Hidden consumption trap
The price of online cameras is generally lower than that of offline cameras, but continuous recharge of data fees (about 200-300 yuan/year) is required during use, and most devices do not support changing data cards. Without recharging, they cannot be used.  ‌
Difficulties in after-sales rights protection
Some merchants take advantage of the loopholes in the 7-day no reason return and warranty terms to delay handling issues during the 90 day warranty period, and even close their stores and register new stores to continue selling.  ‌
Risk of illegal equipment
There are merchants selling pinhole cameras disguised as daily necessities (such as routers and power banks), and some products support remote control and real-time transmission, which poses a risk of privacy leakage.  ‌