Just check coupons out (with price alert and history). What is best price?
GPU ARM-G31 MP2 GPU, CPU Amlogic S905X4-B Quad core ARM Cortex-A55 CPU, LED Indicator Power ON: blue; Standby: Red, ROM 16GB, LAN Ethernet 10/100M, RAM 2GB, Blutooth BT4.2, DVB-T/T2 Support DVB-T/T2/C, WiFi Built-in 2.4G/5G 2T2R WiFi with IEEE 802.11 b/g/n/ac, OS Android 10.0 ATV
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
1. ($69.99): BGda0119
2. ($101.19): BG8OFFCOUPON
3. ($101.19): TTBLACK5
4. ($103.39): BG00c906
apply it 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): BGe3ffa4, BG29c2d5, 00c906, BGa6f971, BGAlerabat6, 8Couponsde, BGc43f68, BG8ReviTrage, Cuponation9, BgGoodie9, BGcoupon8off, BGGutscheine, BG62453b
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Mecool KT1 DVB-T2 TV Box S905X4 2/16GB 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)).