Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGc70abb, BGc9ca7f, BGb2c22a, BGb1d76f, BGa02701, BG4eae38, BGAUGUST8
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Alldocube iplay50S T606 4/64GB 10.1 Inch 4G LTE Android 12 Tablet is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).