Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (906.70 USD): bgshOOp10
Coupon (1000.45 USD): Email5
(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): od7off, BGBFAFF2019, BGCITYADS2019, BGMPB2020
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for HUAWEI P30 Pro 8/128GB Black.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).