Just check coupons out (with price alert and history). What is the best price?
Voice control: Google Nest, Max. current: 10A, Operation temperature: 0 – 40 degree Celsius, Security: WPA / WPA2, Amazon Alexa, Enclosure material: fire-retardant ABS, Power supply: 90 – 250V AC, Wireless standard: 802.11 b/n/g, Max. power: 2200W
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):
Price history and price alert
Do you need price history chart (for all/most countries) for Gocomma Basic Smart Remote Control WiFi Switch? There we go.
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)).