Massdrop offers preorders of the Massdrop x Sennheiser HD 6XX Headphones in Midnight Blue for $199.99 with free shipping. That's $50 under our mention from two days ago, $300 off, and the lowest price we've seen. Made in Ireland, they feature a frequency response of 10Hz to 41kHz and a 6-foot cable. Deal ends June today.
Note: They have an estimated ship date of December 20.