Ultimate Ears 11 Pro Custom In-Ear Monitors
LOGITECH WOOOOOO.
No seriously though, you could probably find some Shure SE115, Dennon AH-C551 or Sennheiser CX 300 iems for that price. I personally got the shittier CX 300-IIs for my everyday needs and they're working just fine. Not the best from my headphone / iem selection, but they're just the right balance of comfortable, fun and they're not too pricey meaning you don't have to worry too much about everyday wear and tear.