The price range for a pair of Logitech headphones is from the 19.95 all the way up to 50 or 60 dollars. It all depends on the the quality of the pair of headphones.
Shure Headphones are ranked the number one headphones.
Skullcandy is the best brand of headphones for running. If you started running daily and need a good pair of headphones for your iPod I would start out with Skull Candy brand it is the best for headphones.
If you buy an MP3 new, it will come with a pair of headphones. You may want to upgrade to a more comfortable pair of headphones based on your needs.
Inquire your local markets such as Wal Mart of Futureshop, or even check in with fellow athletes. They may have insight on a good pair of headphones to use while working out in the gym.
Skullkandy
For studio monitor headphones consider getting a pair of headphones with a high SNR like the Turtle Beach headphones.
Sports Authority and Foot Locker both sell good running headphones and have different brands to choose from. Most start at $40 a pair and go up to $200.
The Dre Headphones are so popular right now amongst music fans that you really need to take care of your pair of cans. There are so many people out there wanting a pair of these headphones or willing to sell them on the black market, so be wary of your pair as anyone might try to steal it. Always have your headphones on you when you're out and about. Never leave your Dre Headphones simply lying out in the open.
Yes, there are many but 1 pair that I found particularly good was the Monster Aviators.
No.
Depends on what you are using the headphones for. If you are in to very clear, crisp music with deep bass, or, you are a DJ, even the solos are professional grade headphones. But if you're just wanting a DECENT pair of headphones and don't really care if there good or not, than get souls.