You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Bluetooth Bluetooth 4.0, Extend Card Support up to 128GB, Screen 13.3 inch IPS Capacitive (10-Point) Screen, CPU Intel Apollo lake Celeron N3450 Quad Core 1.1GHZ, Capacity 64GB eMMC+128GB SSD, RAM 4GB, Camera Front is 2.0MP, WIFI 802.11ac/a/b/g/n(2.4GHz/5GHz), GPU Intel HD Graphics 500, System Windows 10, Resolution 1920x 1080
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
1. ($366.35): Email5
you should apply the coupon 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): 26eaf6, aff7off, bgchinafest
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Alldocube iWork 5X 4/64GB/128GB Tablet.
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)).