I've been running a lot of the high stakes testing for middle schools lately. This year there is an audio component so students are told to bring their own headphones or earbuds. So far out of 200 or so students I've seen:
Maybe 25 pairs of beats.
Maybe 8 skullcandy (particularly one that is grey with a yellow insignia)
4 razor krakens (really bright green and obvious)
Maybe a dozen apple ear pods
10 or so of the low end Sony black or white headphones
And lots and lots of generic low end earbuds.
For anyone who forgot theirs or doesn't have one, we bought some kind of mass batch of ultra cheap monoprice earbuds for them to borrow. I'm still holding out hope that someone will bring something interesting.
I really wanna get my CIEMs before that test, so I can have maximum concentration
But I'm probably not going to sell that many DIY O2 amps by then.