Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi Oclean One Sonic Toothbrush (-3 USD)
2. China – Xiaomi Oclean One Sonic Toothbrush Black (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (67.49 USD): BGHONEY2110
Coupon (67.49 USD): BG10OFFAFF
Coupon (73.99 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): BGONE99, dddf57, 502C6B, vipupgrade8, bGhOnEy10, BGTMCB7, bgshOOp10, BGHB20, BgoFErTaSchInA10, BGSD58965, BgcLuBofErtA10, 7d18f7, BGHBHJ107, BGAFF10OFF, BGCuponation10
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi Oclean One Sonic Toothbrush (-3 USD)
2. China – Xiaomi Oclean One Sonic Toothbrush Black (-3 USD)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Oclean One Sonic Toothbrush Pink? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).