Newegg offers the Beyerdynamic Custom i On-Ear Headphones for $49.99. Coupon code "EMCSRFRD4" drops it to $29.99. With free shipping, that's $30 under our March mention and the lowest total price we've seen. (It's the best deal today by $50 and a great price for headphones of this type.) They feature a 5Hz to 35KHz frequency response, built-in microphone, and 16 design rings. Deal ends today.