8W 5V ETFE Solar Panel (Banggood, Aliexpress: Current 0-2A, Weight 239G With Packing Box, Folded Size 175*130*15Mm, Name 8W ETFE Solar Folding Charger, Conversion Rate 19%, Output Interface Dual Usb, Packing Box Specification 200*140*33Mm, Process Etfe Laminated (2nd Generation Laminated Technology), Output Voltage 5V, Expanded Size 270*175Mm, Packing White Neutral Box, Wafer Grade A Polysilicon, Waterproof Grade IPX6 (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($22.49): BGAMMT03
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGCarEle5, BG63715f, BGLMQ15, BGSCM11
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for 8W 5V ETFE Solar Panel. The lowest price was: $19.99.
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)).