OS: Android 9.0, CPU: Amlogic S905X3 64-bit quad core ARM® Cortex™ A55 CPU, WiFi: IEEE 802.11 a/b/g/n/ac; 2.4G / 5G, RAM: DDR3 4GB, ROM: eMMC 64GB, Ethernet: 100M LAN, bluetooth: 4.0, GPU: G31™ MP2 GPU processor.
Get coupons, create price alert or check price history out! Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
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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. One coupon is available. Cool!
Link: Banggood product page
1. ($51.99): 7d18f7
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): elec, bGpAnDacHeCk, BGMPB2020, bGhOnEy10
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Tanix TX3 S905X3 4/64GB TV Box. The lowest price was: $37.99.
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)).