Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
Coupon (1666.34 USD): BG717000
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): BG3dfd28, BG77b897, BGAlerabat5, BG1e886e, BGVGAMES, BGefb256, BGVDGA07
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for ONE-NETBOOK OnexPlayer 1S R7 5700U 16GB 2TB Game Console is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).