Aliexpress
Click here… to search for Teclast P80h 1/8GB Tablet on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (67.88 USD): aff7off
Coupon (67.88 USD): bgchinafest
(CouponsFromChina.com tip: just apply this code in your 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): 63d9f3, BGss506
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Teclast P80h 1/8GB Tablet.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).