Tanga offers the HDMX Jam Bluetooth Wireless Portable Speaker in Pink, Blue, or Purple, model no. HX-P240, for $29.99. Coupon code "JAM6OFF" cuts it to $23.99. With free shipping, that's the lowest total price we could find by $14. This speaker streams audio from any Bluetooth-enabled device and includes a line-in cable, mini-USB charging cable, and four hours of playback per charge.