Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Wattage: 6W, Color temperature: 6000K, Length (expand): 157.5cm, 100cm (light strip), Voltage: 5V
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Price history and price alert
Price history (for all/most countries) for KPSSDD 2pcs Gesture Sensor Light Strip 1m is here.
Price records source(s): Gearbest
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)).