Dobot Official via Amazon offers the Dobot Rigiet 3-Axis Handheld Gimbal Stabilizer for Smartphones for $159. Coupon code "ZY2SV7WG" cuts that to $79.50. That's the lowest price we could find by $80. It's designed for recording steady video using your phone's camera and features:
  • auto-tracking and live streaming when paired with Regiet app
  • slow motion and timelapse modes
  • button control panel
  • carrying case