Cable Length (m): 1.2m, Frequency response: 20 – 40KHz, Impedance: 14ohms, Sensitivity: 105dB.
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
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 price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($82.18): BGBuscape01
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): 12annv-5, e2bcea, TTxBG10, 2019SPEDM, aff7off, BG3CSUM, bgssaff9, AFfbG10, 502C6B, BGBFAFF2019, BGHUA12396, BGCITYADS2019, Email3, BG20CES, BGVDay10%off, EARSP11, BGAFF10OFF, BGMPB2020, BGTT10, bGhOnEy10, Email5, BGSS10%SW, bgshOOp10, BGELIG0920, BG11SHOP, BG11PP7, 7d18f7, BG4BW25, BGLOAC1, BG651551, BGBRPL2, BGHOTSHOP15
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – KZ AS10 5BA Earphones Black No Mic ($-3)
2. China – KZ AS10 5BA Earphones Cyan No Mic ($-3)
Price history and price alert
Price history (for all/most countries) for KZ AS10 5BA Earphones Cyan With Mic is here. The lowest price was: $36.99.
Price records source(s): Gearbest, 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)).