Basically copy coupon, view price history or create e-mail price alert. Best price?
Mechanical Life: 100 /000 times at least, Dimension: 120*72*43MM, Wireless Fidelity: 802.11b/g/n, Brand Name: MakeGood, App Name: Samrt Life, Name: Fan speed switch, Led indicator: Blue, Function: Touch Function, Model Number: MG-MDF02, Max. Current: 6A, Material: Tempered Glass+PC, Frequency: Wifi 2.4G, Color: White / Black, Max. Voltage: 240V, Rated load: <600W, Voice Control: Via Google Home Alexa, Operating voltage: 110V-240V/50-60HZ, Certification: CE /RoHS
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. I couldn’t find any coupon for this product on latest product update.
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
Price history and price alert
Price history (for all/most countries) for MEKAGOOD 110V-240V WiFi Touch Switch Tuya is here.
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)).