Thunderobot L1 Computer Screen LED Monitor Light Bar (Banggood, Aliexpress: 567Lux（40cm）, 762Lux（35cm）, Applicable screen thickness: 15mm-35mm, Rated voltage: DC5V (USB connection), Light source type: cold and warm dual-color LED, Weight: 425g±10g, Color temperature: 3000-6000K (±250K), Material: Aluminum alloy / ABS, Power range: 5W±10%, Size: 450mm*94.8mm*83.6mm, 402Lux（50cm）, Brightness: 1098Lux（30cm）, Color Rendering Index: Ra≥95 (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 coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($46.05): 00c906
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): BGMAL1, BGTHJP1, BGTHIL1, BGTHAU1, 13f142, BGTHL99, BGTHLG1, BGLIGL29, BGTHGL1, BGMLL1
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Thunderobot L1 Computer Screen LED Monitor Light Bar. The lowest price was: $29.99.
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)).