Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Built-in battery capacity: 5000mAh, Operation time: 4 – 8 hours, Package Contents: 1x Gimbal (Battery Included), 1x USB Cable, 1x English Manual
Price history and price alert
Price history (for all/most countries) for Xiaomi 3-axis Gimbal [Fast-23] is here.
Price records source(s): Gearbest
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You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).