You can create price alert here, copy coupons and view price history. What is best price?
Maximum power 3680W, Material PC V0 fireproof UV resistant, Voltage 230V, Product model SP211, Standard EU plug, APP control Gosund / Smart life / Tuya, MAX output 16A, Network WiFi 2.4GHz (ONLY)
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGcou259, BG2f8a17, BGD11026, BGB5035, BG7f97b1, BG0d171e, ADMITAD2212, BGSmart6, Cuponation9, BG8ReviTrage, BGcoupon8off, BGGutscheine
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Gosund SP211 16A Smart Plug ($-3)
Price history and price alert
Here is price history (for all/most countries) for Gosund SP211 16A Smart Plug 2pcs.
Price records source(s): Banggood
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)).