Today only, until 4 pm ET (or 100% claimed), Amazon offers the Sennheiser CX 880 Ear Canal Headphones for $49.99 with free shipping. (Select "View Gold Box Offer" to see this price.) That's tied with our November mention as the lowest total price we've seen. Sales tax is added where applicable. Co-designed with BMW DesignWorksUSA, these earbuds feature a 17Hz to 23kHz frequency response, 4-foot cord, and three sizes of ear tips.