You can create price alert here, copy coupons and view price history. Best price?
Product material PC, Wireless connection Wi-Fi IEEE 802.11 b/g/n 2.4GHz, Power input 5V—1A, Net weight 133g, Working temperature -10 ° C ~ 50 ° C, Product size 100x 100x 26mm, Infrared frequency 38kHz, Color Black
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 Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
1. ($16.19): bGhOnEy10
2. ($16.19): BGdragonBoat
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGXMRBC, 502C6B, TISPrime01, Tools1, Tools3, BG111BB, BG9922, BG2020NS, BGBN2, BG2SB2, BGHN2C, BG22SP, BG2MFC, BGSS10%SW, BGEES11, BGWow101, BGeLt15
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Mijia Universal Remote Controller Switch ($-3)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $16.19.
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)).