Fry's Electronics offers the Sony SA-W3000 12" Powered Subwoofer in Black for an in-cart price of $117 plus $14.54 for shipping. That's the lowest total price we could find by $57. Sales tax is added where applicable. It features a 180-watt amplified subwoofer, 12" Mica reinforced cellular woofer, frequency response of 20Hz to 200Hz, and more.