Massdrop offers the Beyerdynamic In-Ear Headphones, model no. DTX 72 iE, for $44.99 with free shipping. Outside of the mention below, that's the lowest total price we could find by $34. They feature a gold-plated plug, 9mm drivers, aluminum housing, three sizes of silicone tips, and frequency response range of 20Hz to 20kHz. Deal ends April 10; the expected shipping date is April 24.

A close price: Sonic Electronix charges $43 plus $5 for shipping.