Wearing method: In-Ear, Impedance: 34Ω, Cable length: 120cm, Cable: Oxygen-free, Model: GK-G1, Sensitivity: 103dB, Brand: KZ, Frequency: 20-20000Hz, Color: Black / White / Green.
Go down and check coupons out. Remember to check price history if it is available. Best price?
Aliexpress
I could not find it 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 China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGBRPL2, BGHOTSHOP15, BG53e9c8, BGAlerabatKL
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for KZ GK-G1 In-Ear Wired Earphones. The lowest price was: $6.52.
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)).