Sears offers the Philips Portable Speaker in Silver, model no. SBA1610/37, for $12.20 with free shipping. (Amazon has it for the same price for Prime members.) That's the lowest total price could find by $2, but most retailers charge $17 or more. This pocket-sized speaker features 2W Rms power, a 3.5mm plug, neodymium Speaker drivers, and also functions as a mobile stand.
Groupon cuts up to 73% off a selection of new and refurbished home theater items, as listed below. Plus, they all qualify for free shipping. With items starting from $64.99, that's the lowest total price we could find by at least $3 and as much as $35. The deals, with expiration dates noted:
Bigdeals via eBay offers the Philips ActionFit Sports Earphones, model no. SHQ1017GY/28, for $14.99 with free shipping. That's $5 below our October mention and the lowest total price we've seen. (It's a current low of $2.) These headphones feature 13.5mm dynamic drivers and a 30Hz to 20kHz frequency response.