Just check coupons out (with price alert and history). What is the best price?
Dimensions type: 478x 478x 670mm, Rated current: 10A, Net weight: 68.4g, Plug type: EU plug, Housing material: PC/ABS, Wireless type: WiFi 2.4GHz b/g/n, APP Name: eWeLink, Rated power: 90V~250V AC
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t know if this is a good price – number of records in my database is too low! One coupon is available. Cool!
Link: Banggood product page
1. ($11.04): BGSmart6
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Price history and price alert
Not enough data to show price history chart… $11.04 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).