Yeap, can't spend more than 50$, I'm on a tight spot right now.
Never had any issues with their build quality. They are entirely plastic, but are very solid feeling. I just folded them up and put them in my backpack to carry them around. I sold them to a friend after about 3 months of use with no problems. You also have the option to buy the Beyer DT250 velour pads for them and the beyer headband for extra comfort.
Thanks, so no problems with the build quality. :) Now, passed the euphoria moment, I'm really wondering if they really sound that good (I mean, they are 25$). Could you compare their sound to other same price range phones? Here someone say they are similar to the HARX700 and HTF600-S.