Aliexpress
Click here… to search for Baseus Horizontal Gravity Car Phone Holder on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (14.77 USD): BG9a4d5b
Coupon (17.46 USD): 13f142
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): AFfbG10, 15holders, BGBASE123, Holder10, BGVDay10%off, BGHJOLR, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGHONEY2110
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Baseus Horizontal Gravity Car Phone Holder.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).