Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe .
Link: Banggood product page
Coupon (197.99 USD): BGc28268
Coupon (206.79 USD): BG589b2e
(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): BG34fdea, TTBLACK5, BGcd5875, BG4f166c, BG0d944f, Sports23q1, BGSaleAD
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for 2x XMUND XD-SP2 100W 18V Solar Panel [EU] is here.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).