This is the cheapest ever brushless motor for drones. This motor is recommended to the newbie drone enthusiast and the wise pilots who are not willing to ruin the motors at the test stages.
Even when they are available at a price everyone can afford, their shocking performance is what makes everyone like them (except A2212, at this price no Brushless Motor in the Market will give you the thrust around 700gm in fly). The low price of this motor is recognized with its low-quality bearings and magnets. This motor produces noise and vibration. Also, they become warm while operating at high speed. But all these shortfalls are negligible and doesn’t affect the performance of the motor.