Solarfam 100W Solar Panel Kit SZ-100-36M [EU] (Banggood, Aliexpress: [EU Direct] Solarfam 100W Solar Panel Kit Flexible Monocrystalline Solar Cell Power Charger for Outdoor Camping Yacht Motorhome Car RV Boat / SZ-100-36M (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I’m afraid that there’s no working coupon in Banggood. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGBFDAY8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Not enough data to show price history chart… $120.04 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 and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).