Aliexpress
Click here… to search for TRN TA1 Knowles BA DD Earphones on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (42.20 USD): BGAlerabatKL
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGCuponation10, BGSK055, BGLOAC1, 13f142, BGa0b145, BGBuscape01, BGBRPL2, BGHOTSHOP15, BG53e9c8
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for TRN TA1 Knowles BA DD Earphones? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).