Adorama offers the Audio-Technica ATH-M40x Professional Monitor Headphones, bundled with the Blue Snowball USB Condenser Microphone in Gloss Black, for $109 with free shipping. That's $48 under the lowest price we could find for these items separately elsewhere. The headphones feature a 15Hz to 28kHz frequency response, 40mm neodymium drivers, and three detachable cables. The microphone features a -10dB pad switch, direct USB integration, and cardioid and omni-directional pattern switch.
Update: Specs corrected.