Speaker Size 50mm, Brand Lenovo, Color Black, Usage Pattern Wired, RGB Light Support, Material ABS, Model H5, Sound Effect Bass level, Wearing Type Over-ear.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($22.69): BGAudio9
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG340ec6, BGf4123f, BG1b5830, BG23c89c, BG9e8e27, BG9d4690, BGAudio3
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for Lenovo H5 Gaming Wired Headphones 50mm. The lowest price was: $22.69.
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)).