Moudle Plastic; Black Color, Flash eMMC: 64GB, Memory DDR3: 4GB, WiFi IEEE 802.11 b/g/n; 2.4G / 5G, Bluetooth BT; Support Voice Remote, GPU G31™ MP2 GPU processor, CPU Amlogic S905X4 64-bit quad core ARM® Cortex™ A55 CPU.
Go down and check coupons out. Remember to check price history if it is available. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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. Only one coupon available!
Link: Banggood product page
1. ($64.85): BG589b2e
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/i1u
Old coupons (from the oldest to the newest): BG00c906, BGAlerabat6, BG2609fd, BG9828f9, BG8OFFCOUPON, TTBLACK5, BGSaleFeb8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for HK1 RBOX X4S S905X4 4/64GB TV Box. The lowest price was: $49.99.
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)).