Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (66.42 USD): Cuponation9
Coupon (67.15 USD): hoNEYbGdeAlS
Coupon (68.61 USD): BG00c906
(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): BGe0bc98, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, BG1efeb0, 8BGwbg2204, BGe3cf2a, BGJUNEGSG9
(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 10moons G30 Magic Circle Tablet 8192 Pressure is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).