Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Alldocube M5X Pro 4/128GB X27 Tablet (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t know if this is a good price – number of records in my database is too low! One coupon is available. Cool!
Link: Banggood product page
Coupon (194.99 USD): 7d18f7
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGee5924, 7bcdf9, aff7off, Email5, BG3f96d8, BGd2e185
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Alldocube M5X Pro 4/128GB X27 Tablet (-3 USD)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 144.99 USD.
You can set price alert (for Banggood).