Hi so I just spent $25 on a nice audio cable from Amazon AU.
It had to be this specific one as my headphones design makes them only accept one which is thin connection on the headphone side.
It has braided fabric on the outside if the cable, and is gold plated on both ends. That’s it.
Internally it is just a normal cable.
Regarding sound quality there is likely zero benefit. It is just nice for the sake of being nice.
My purchases tend to be functional, this was an odd occasion where I got something for the sake of being nice.
So to you is it a waste of money, or is it an acceptable purchase.
It's your money.
If it makes you happy, then it isn't a waste.