Staples offers the Sony Stereo Headphones in Black, model no. MDR-ZX100/BLK, for $9.99. Opt for free in-store pickup to avoid the $9.95 shipping fee. That's tied with our February mention as the lowest total price we've seen. (It's a current price low by $5.) They feature 30mm drivers and a frequency response of 12Hz to 22kHz. Deal ends June 15.