Aliexpress
Click here… to search for Lenovo P8 TAB3 8 Plus 3/16GB Tablet 4G Version 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 (119.99 USD): BG614dc7
Coupon (148.79 USD): aff7off
(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): 8c741b, a71580, 845cb5, 89e119, 7687cc, 636d1c, 659309, 7ba55a, BGf9e05b, BGa19c97, BGe17a55
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Lenovo P8 TAB3 8 Plus 3/16GB Tablet 4G Version? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).