KEELEAD S5 3-Axis Handheld Gimbal Stabilizer US $51.49 (~AU $74.67) Shipped @ GearBest

Searching eBay/AliExpress this is currently the cheapest I could find. - Price in title inclusive of GST.

Main Features

1. Supports smartphones weighing up to 8.1 oz / 230g, and up to 3.35" in height
2. 330° of pan, 325° of tilt, and 180° of roll; Large, cine-style focus/zoom wheel with a witness mark
3. Dolly Zoom Vertigo effect, Multiple time-lapse and follow-mode choices;
4. Up to 12-hour runtime, able to charge for phone while shooting, support an external power pack
5. Use with the free, downloadable Gimbal Pro app to control select iOS/Android phone functions
6. It supports android 5.0 or newer and IOS. 10.0 or newer (Such as iphone 5s/6/7/8/s/plus,iphone X/Xs/Xr/Max)

Specifications:

Number of Axes: 3-Axis
Rotation Range: Pan, 330 degrees; Tilt, 325 degrees; Roll, 180 degrees
Payload: up to 8.1 oz / 230g
Smartphone Dimensions: Height 65 to 82 mm
Ports: USB and micro USB
Battery: Lithium-ion Battery with the capacity of 4000mAh, 5.0V
Runtime: 12 hours
Charging time: 5 hours
Operating Voltage: 3.4V-4.2V
Operating Temperature: 14 to 113 F / -10 to 45 degrees
Dimensions: 12.91x4.84x4.13" / 328x123x105mm (with handlebar)
Weight: 500 g (with handlebar and battery)