Adorama offers the Samson Professional SR950 Studio Reference Closed-Back Headphones, model no. SASR950, for $23.99 with free shipping. That's tied with our mention from a month ago and the lowest total price we've seen. (It's the best deal now by $8, although most retailers charge $45 or more.) They feature 50mm neodymium drivers and a frequency response of 10Hz to 25kHz.