Check if there is $14.99 coupon for 10W Solar Panel with Clips (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
Latest coupon code price check (UTC time):
Color Black, Occasion Outdoor / Camping / Garden / etc, Operating temperature 0 to +60°C, Size 110x136mm, Application Lamp / Fan / Pump / etc, Material Polycrystalline Silicon, Open circuit voltage 13.5V, Working voltage 12V(Can be used to charge 3.7V battery)
Banggood ($14.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it a low price? Hmmm, price is higher than average (which is $8.34 right now), so better set price alert down below…
Link: Banggood product page
Price: $14.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): Cuponation9, BG073996, BG00c906, BG27e678, Sports23q1, BG8a75a2, BGdd450a, BG3e4f8c, BG589b2e, BGc28268, BG9dce6b
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for 10W Solar Panel with Clips.
Price records source(s): Banggood
Click on image to enlarge. 
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)).