Would people want a earphone se book

[Magnus1935]

I have a booklet for a earphone se, that most people would not have known to se. The earphones cost from 100-400.
I was thinking of putting up for around $30-40.
Is this too expensive, and is there any parts that i should put a lot of focus on.

[Badmankilla]

Lel, left side no sound, pls send new one, kek

[Felix]

I have a booklet for a earphone se, that most people would not have known to se. The earphones cost from 100-400.
I was thinking of putting up for around $30-40.
Is this too expensive, and is there any parts that i should put a lot of focus on.

PM me the company name im interested.

[nsx7266]

Aren't the methods for these already made public for awhile now?