Today only, until 12 pm noon ET, 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 April mention as the lowest total price we've seen for this set. (It's also a current price low by $46.) Co-designed with BMW DesignWorksUSA, these earbuds feature a 17Hz to 23kHz frequency response, 4-foot cord, and three sizes of ear tips.