As one of its daily deals, Best Buy offers the Aluratek Bump Wireless Bluetooth Speaker, model no. APS02F, for $19.99 with free shipping. That's the lowest total price we could find by $15. It's compatible with most MP3 players (including iPod and iPhone) and features a 33-foot range, expandable bass chamber, Bluetooth, built-in lithium-ion battery, and USB connectivity. Deal ends today.