well i was looking to buy some tuneups for my giro g10 when i saw that they were 40 dollars.personally i dont think thats that mush money for a good pair of headphones but if you can save money why wouldent you.I got this idea from a friend last year.Its very simple and easy all you do is get a old pair of head phones but they cant be earbuds.cut a hole in the ear peice take some padding out to make room and put the speakers in.I just thought that was better then spending all that money on something that you could make out of 5 year old headphones.