When I was updating this page, then coupon price was $12.05 for NexTool Twinkle Ambient Light with 2m Strip (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
NexTool Multi-Functional Twinkle Ambient Light with 2M Strip Waterproof Outdoor Camping Atmosphere RGB Lamp Cycling Warning Lights
Latest price update (UTC time):
Banggood ($12.05)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. Is it good price? It’s a good price, isn’t it? The average is $13.30.
Link: Banggood product page
Price: $12.05
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
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 NexTool Twinkle Ambient Light with 2m Strip.
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)).