Aliexpress
Click here… to search for Teclast M8 3/32GB Tablet on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (117.79 USD): Email5
(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): BGtabm8, aff7off, BGtabm8wk, 7bcdf9, BGtabm88, BG32e27d, BG96bed9
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Teclast M8 3/32GB Tablet.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).