Aliexpress
Click here… to search for Enernova SP-18100 100W Solar Panel [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. We have found one coupon for this product!
Link: Banggood product page
Coupon (193.19 USD): BGAUGUST8
(CouponsFromChina.com tip: this code has to be applied 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
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: 193.19 USD.
You can set price alert (for Banggood).