Just check coupons out (with price alert and history). What is the best price?
Sensitivity: 108 dB ± 3dB, Impedance: 24ohms, Cable Length (m): 1.25m, Connecting interface: 3.5mm
Aliexpress
There’re some similar (or not) items on Aliexpress
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. We have found one coupon for this product!
Link: Banggood product page
1. ($43.19): BG651551
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): CFadmitad, e2bcea, 15earbud, TTxBG10, aff7off, BG3CSUM, BGPAYPALSS, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, EARSP11, BGAFF10OFF, BGMPB2020, bGhOnEy10, BGSS10%SW, bgshOOp10, BGELIG0920, BG11SHOP, BG4BW25, BGLOAC1, 13f142, BGa0b145, BGBuscape01
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – TRN V80 Earphones Blue ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for TRN V80 Earphones Black? There we go.
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)).