Aliexpress
Click here… to search for CHUWI LapBook Plus X7-E3950 8/256GB Notebook on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (419.99 USD): Wholesale20
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): aff7off, BGCHULAPL, affiliate6, BGCHUP800, BGCWLPP93, BGCWLPP931, BGCWLPP932, BGCWLP2, BGCWLP3, BGCWLP4, BGCWLP8, BGCWLP9, BGCWLQ1, BGCWLQ2, BGLAPCH1105, BGBFAFF2019, BGCWLQ3, BGCITYADS2019, BGCWLQ4, BGCWBF05, BGCWLQ5, BGCWLQ6
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for CHUWI LapBook Plus X7-E3950 8/256GB Notebook is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).