You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Package Contents: 1x Toothbrush Body, 1x Storage Case, 3x Brush Head, 1x Wall-mounted Holder, 1x USB Cable, 1x English / Chinese Manual
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Oclean One Sonic Toothbrush KIT White.
Price records source(s): Gearbest
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)).