Anyone knows the HS-35D Micro Servo Motor?

This servo motor looks very nice and it's very small, but it costs a LOT. I think it would fit just fine in applications such as helicopters or quadcopters. 

hitec-hs-35d-micro-servo-motor-2-B.jpg

here it is: https://www.robotshop.com/ca/hitec-hs-35d-micro-servo-motor.html