Pros: Decent SQ for price, fairly nice cord
Cons: Build quality, huge clunky body, very harsh sound
I got these for ~$10 online. I must say the first thing I noticed was the shoddy build quality. However, considering the asking price and the decent sound quality, this is really nitpicking. The cable is actually decent enough, especially for the price, being a braided sort of fabric.
On to sound quality! These things sound incredible compared to stock earbuds.
The bass is very present and strong, punchy even, but feels cold and kind of harsh in places. Sub-bass is very good for a headphone in this price range, as long as the seal is perfect.
The mids feel recessed, almost drowned out by the bass in some songs.
Highs are fairly detailed but sound tinny and harsh, which is a turn-off for me. Jazz sounds absolutely terrible on these.
There was barely any improvement over 50 hours of burn in.
The sound stage is about as flat as a piece of paper. On more aggressive, bass-oriented songs,
the bass completely covers much of the mids. Even though the bass is so strong, it sounds thin and far too harsh.
There is barely any instrument separation.
Build quality on these is the worst out of anything I have ever seen. On my pair the filter screen above the drivers fell off after about a week.
However, I guess they had to make up the price of the drivers somehow.
Overall, not the greatest. My $30 set of JVC HA-S600 full-size cans completely destroys these in every possible way, as do many pairs of cheap ~$15 IEMs I've owned.
Seriously, if you're thinking of spending the ten bucks, why not spend another 5 and actually get something halfway decent sounding? There are plenty of other options,
and I feel as though this set of IEMs has been severely over-hyped.

Good review though.
Take it from someone who owns them and has actually tried them out of good equipment.