Massdrop offers the Brainwavz S1 Noise-Isolating Earphones for $24.99 plus $2.73 for shipping. That's the lowest total price we could find by $27, although we saw them for a buck less last fall. Features include a 20Hz to 20KHz frequency response, flat cable, and six pairs of silicone tips. Deal ends June 12.
Note this item is estimated to ship on July 3.