Newegg offers the Beyerdynamic MMX 41 iE In-Ear Headphones for $24.99. Coupon code "EMCSRERB2" drops the price to $19.99. With free shipping, that's the lowest total price we could find by $30. They feature an in-line microphone and include three sizes of eartips, a carrying case, and Skype/VoIP adapter. Deal ends April 2.