Walmart offers the Britelite iRocker Multi-Function Powered Loud Speaker for $74.96 with free shipping. That's the lowest price we could find by $15, although we saw it for $7 less in May. It features a 1,500-watt peak output, 15" woofer, 1" active tweeter, Bluetooth, FM radio, 3.5mm auxiliary input, USB, and SD card slot.