You can get 7.5W Solar Folding Panel 5V 1.5A for $17.08 using coupon code (in Banggood). Get coupons, create price alert or check price history out! You probably want to know what is the best price?
7.5W Solar Folding Bag 5V 1.5A Max USB Outdoor Cell Phone Portable Solar Charger Charging Board
Latest price update (UTC time):
Banggood ($17.08)
Banggood warehouse is located in China. I have no active coupons for you right now. Is it cheap? This price is higher than average price ($15.12) for this item.
Link: Banggood product page
Price: $17.08
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e
(you can check these old coupons out, but these probably won’t work)
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
Do you need price history chart (for all/most countries) for 7.5W Solar Folding Panel 5V 1.5A? There we go.
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)).