Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Xiaomi Mijia WiFi Repeater Pro 300M EU Plug | 13.42 USD | – |
More 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 (17.99 USD): bGhOnEy10
Coupon (17.99 USD): BGSS10%SW
Coupon (18.99 USD): 13f142
(CouponsFromChina.com tip: apply code in your basket (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): 502C6B, 6C8E66, 6c9903, bgmh2, BGMIB2, BGOMG2, TS15prime, TISPrime01, BG14XM, PICODICOM, BGXMSSR, BGBFAFF2019, BGCITYADS2019, BGMRC, BGRCRA, BGMHPK, bGpAnDacHeCk, BGOMG4, BGRCSRA, BGHOMEAPP, bgshOOp10, BGHome15%, BGHOMEAPP13
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Mijia Wifi Remote Controller Switch.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).