Go down and check coupons out. Remember to check price history if it is available. Best price?
Connectivity Technology Infrared / WiFi（2.4GHZ ONLY）, Model RM4 PRO, Support IR / RF / WiFi, RF frequency 433MHZ / 315MHZ, Power Supply AC100~240V / 50 / 60Hz, Supported device Android and IOS
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. ($42.76): BGJUNEGSG9
2. ($43.23): hoNEYbGdeAlS
coupon code has to be applied in shop’s 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): BGd21f8f, 6GSGIT, BG3f30ef, BGD11063, BGB5074, BG949394, BG6f2068, ADMITAD2212, BGSmart6, BGAlerabat1, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Broadlink RM4 Pro Smart IR/RF Remote Control.
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)).