Aliexpress
Click here… to search for Wolike CN-1000 999Wh 270000mAh Power Station 1000W with 150W Solar Panel [EU] on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK. There is one coupon right now! Check this out.
Link: Banggood product page
Coupon (549.99 USD): BG549cz
(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
Price history and price alert
Not enough data to show price history chart… 549.99 USD is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood).