Just check coupons out (with price alert and history). Do you want to know what the best price is?
Material Aluminum Alloy+PC+ABS, Lamp Size Φ2.2x48cm, Light Source LED, Rated Input DC 5V⎓2A, Maximum Power 10W, Color Rendering Index 90 /00€, Lamp Life 50 /000h, Illuminance(Lux/Height) >900Lux/45cm, Color Temperature 3000K-6500K, Model BW-CML4
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($42.99): BG154390
2. ($44.99): BG5a83f6
3. ($63.69): Cuponation9
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGWCML4, BGCML4, BGHU1679, BGe266f5, BGac1738, BG1efeb0, MVC8SPRING, 8BGwbg2204, 8wEbgaInS5, BG0d712d, pROMo8cuPoN, BG815208, BG3c607f, BGbf7097, BGdcb52c, BGffd753, BGce9384, BG1dcd8e, BGBWITHUSBL4, BGb0f2a2, BG039425, COUPONSDE1wk
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BlitzWolf BW-CML4 Monitor Light Bar RGB [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for BlitzWolf BW-CML4 Monitor Light Bar RGB is here.
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)).