What's the best way to pick which headphones to buy?

Sara wants some new headphones but there are lots to choose from. How should she go about finding a new pair?

I want to buy a new pair of headphones. I've had a pair of Sony headphones for years that sound great and cost me $45 (33.64). How can some headphones cost hundreds of dollars? Also, are wireless/Bluetooth headphones any good? Sara

Headphones, like most technology products, are subject to the law of diminishing returns. Most cost from about 25 to 350, but you can pay more than $50,000 for a pair of Sennheiser Orpheus headphones, or a100,000 for the bejewelled bling of Focal Utopia headphones by Tournaire.