Aliexpress
Click here… to search for Wall Mount Toothbrush Holder on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (10.62 USD): 8Couponsde
Coupon (10.62 USD): MVC8SPRING
Coupon (10.73 USD): 2203ActiesNL
Coupon (10.85 USD): BG00c906
(CouponsFromChina.com tip: you should apply the coupon in your 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): BGTH199, AFfbG10, BGYST19, 502C6B, BGPIE14, BGBASE19, BG014HOL, BGBASE014, BGBFAFF2019, BGSTAND1, BGCITYADS2019, BGBFI881, BGBGHFRI15, BGWA77O, BGBAPOHG, BGHNOE, BGVDay10%off, BGHOMEG12, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSJHome32, BGSepPro22, BGHome15%, BgcLuBofErtA10, BG10OFFAFF, BGwhielabel, BGGRE052, 13f142, BG10OFFAFF1, BANGGOODSD, 6GSGIT, BGBF20off2, 00c906, BGAlerabat1, Terence, Tabby20, BG1efeb0
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Wall Mount Toothbrush Holder is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).