5m DC12V LED Strip Light 5050 RGB 30LED/m [EU] (Banggood, Aliexpress: Working temperature: -20℃ To 50℃, Waterproof: no, Output Power: 24W, LED chip: 5050, Length: 5M, Luminous Flux: 14LM/LED, Emitting Color: RGB, LED Quantity: 30LED/m, View angle: 120°, Working voltage: DC12V (the best price with coupon)).
You can create price alert here, copy coupons and view price history. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($13.99): BG589b2e
put item in your cart and apply coupon code there 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): BGLIG12, BG10OFFAFF1, BANGGOODSD, 00c906, BG00c906, ADMITAD2212, BGLED2203, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGf94f14, BGLED2206, Cuponation9, 9OFFSUMMER, BGLED07
(these coupons are old, so probably won’t work)
Price history and price alert
Not enough data to show price history chart… $7.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).