BroadLink RM4 Mini IR Smart Home Universal WIFI Remote Controller (Banggood, Aliexpress: APP Name BroadLink, Infrared Range ≤8m, Standby Power ≤0.69 W, Communication Mode WIFI 802.11b/g/n (2.4Ghz), Input Current 750 mA, Gross Weight 100g, Support OS IOS 9.0 / Android 4.0 and above, Model RM4 Mini, Size 8.5*5*6.5cm, Net Weight 80g, Infrared Frequency 35Khz, Infrared Direction Multi-direction infrared, Working Humidity ≤85%, Input Voltage DC5V, Brand BroadLink (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items 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.
Link: Banggood product page
1. ($22.99): tRaDetRaCKeR
2. ($22.99): 8wEbgaInS5
3. ($23.24): 2203ActiesNL
this code has to be applied 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
Old coupons (from the oldest to the newest): BGe446b3, 13f142, BG9e1984, BGcd5218, BG82504, BG83104, BG090804, BG035cd2, BG1999b1, BGD11062, BGB5073, BGc2705f, BGbabab0, ADMITAD2212, BGSmart6, 8Couponsde, MVC8SPRING, 8BGwbg2204
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for BroadLink RM4 Mini IR Smart Home Universal WIFI Remote Controller? There we go. The lowest price was: $15.99.
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)).