Intelligent Data Analysis, APP Control.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($38.56): elec
2. ($38.56): bGhOnEy10
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): 502C6B, cdscale, healthylifestyle, 489224, HHHHHOT, 9f65ec, 130229, M1690, alibuy39, xmscale, vipupgrade8, limitcode1, 14f804, bgdeals, BGYMM2R, BGYMMIN2, ML15%Pro, BGOPCOUPONZ, AFfbG10, BGYMAUG, BGHC715, BGYMS99, BGGRS11, BGBFHC21, BGCITYADS2019, BGE13, BGVDay10%off
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi YUNMAI Balance Mini 2 Smart Weight Scale. The lowest price was: $28.88.
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)).