Blutek USA via eBay offers the Monster Beats by Dr. Dre Studio Noise-Canceling Over Ear Headphones in six colors for $169.99 with free shipping. That's $20 under our mention from two days ago and the lowest total price we could find by $22. They feature active noise cancelling (powered by two AAA batteries, included), a detachable cord, audio adapter, carrying case, and in-line remote and mic.