AudioTopia via Amazon offers the Audio-Technica Professional Studio Monitor Precision Headphones
, model no. ATH-M40FS, for $50.96
with free shipping
direct charges several cents more.) That's the lowest total price we could find by $8, although many stores charge beyond $70. Sales tax is added where applicable. They feature a frequency response of 5 to 28kHz, 100 dB sensitivity, 40mm diameter drivers, and rotating earpieces.