Sold by Unitree Robotics’s own shop
Unitree Robotics Unitree Brushless Digital Servo — Brushless Digital Servo (Plastic) Student Price

Photo © Unitree Robotics, from the shop’s page

Unitree Brushless Digital Servo — Brushless Digital Servo (Plastic) Student Price

$15

Buy it on shop.unitree.com

Sold by Unitree Robotics’s own shop, not by droid.monster. The price and stock here are what the shop’s own site listed when we last read it, on 06/10/2026; its page is the one that counts.