Usually $40. I have a couple of these in service the past 6 months or so. One in my ERBEv2 pushing around 3.8 trenchers and one in my outcast with the stock backflips. The servo does a nice job in both, especially on 7.2V.
https://www.rcjuice.com/hobbystar-hs-4320hv-hv-high-torque-digital-servo.html
Specs:
Specifications:
https://www.rcjuice.com/hobbystar-hs-4320hv-hv-high-torque-digital-servo.html
Specs:
Specifications:
- Speed @6.0V: 0.17 sec
- Speed @8.4V: 0.16 sec
- Torque @6.0V: 337 oz/in
- Torque @8.4V: 416 oz/in
- Pulse/Frequency: 1500µ/330Hz
- PWM Voltage: 3.3V-5.0V
- Dimensions: (LxWxH) 40.5x20x40.5mm
- Weight: 62g
- Bearing: Dual ball bearing
- Gears: Steel
- Motor: Digital Core
- Input Voltage: 6.0V-8.4V
- Output Shaft: 25T spline
- Wire Harness Length: 260mm