Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Operating voltage: 7.4V, Operating current: 120 – 2500mAh, Payload: 75 – 210g, Battery: 2000mAh
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Too bad there’s no coupon right now in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 24eb2b, 0124ab, f62884, Parts8, BGBCBG10, BGSmooth4, BGSmooth, 502C6B, BGBINKUPON067, BGBFAFF2019, BGCITYADS2019, BGBFEVENT10, 7bcdf9, BG9NY, 2020CNY, BGVDay10%off, bGhOnEy10, BGRZY, BGSS10%SW, bgshOOp10, BGTT10, BG11PP12, BGSFGDG, Abdul906067, BGFPV50-5, BGSmooth4W, BGFPV-10, BGCuponation10, BGOSW57, BGDAVIS
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Zhiyun Smooth 4 Handheld Gimbal ($-3)
2. Europe – Zhiyun Smooth 4 Handheld Gimbal [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Zhiyun Smooth 4 Handheld Gimbal White.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
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)).