ATM you can buy CROSIKO LED 4pcs Sound Control Pickup Rhythm Ambient Light Strip for $27.99 (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
CROSIKO LED Sound Control Pickup Rhythm Ambient Light Strip Colorful LED Rechargeable Battery Car Computer Audio Music DJ Atmosphere Lamp – 4pcs
Latest coupon and price update (UTC):
Banggood ($27.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. But wait a sec… Is it a good price? Hmmm, price is higher than average (which is $22.29 right now), so better set price alert down below…
Link: Banggood product page
Price: $27.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG02b8c7
(these codes were not working in latest coupon update, but you can check them out anyway)
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for CROSIKO LED 4pcs Sound Control Pickup Rhythm Ambient Light 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)).