Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (8.86 USD): Parts8
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGURUAVPRO14, bGhOnEy10, BGdragonBoat, BGSS10%SW, BGRCBC7, BGAFF10OFF, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGBCSpring1, BGDAVIS, BGHONEY2110
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for URUAV U3 18W 2A/3A Type-C Battery Balance Charger is here.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).