Just received these yesterday. Took about a week to arrive, not bad for free shipping from China.
Can't compare them to real dr dre in ear headphones (from a youtube video you can tell the difference between real and fake by the box, fake boxes the picture of Dr Dre is a bit darker) but can compare them to Sennheiser cx 680 sports 2 headphones for about $80 and ipod standard headphones for about the same price $25.
Have only had them one day so do not know how they will will hold up, but a ton better than ipod headphones, sound good, good noise reduction (you wont hear anything outside). I have gone through 3 pairs of sennheiser $80 headphones in a year, should get replacements in about a week and will do another review. As of now I would say these are a great value for around $25, of course they basically have no warranty, if they fail you would have to send back to china, and how much is that going to be, like 1/2 the price to get a new pair?