Newegg offers the Klipsch Subwoofer, model no. KW-100, for $129.99. Apply coupon code "VISACHECKOUT" and checkout with Visa Checkout to drop the price to $116.99. With free shipping, that's the lowest total price we could find by $42. It features a 55-watt RMS (225-watt peak) amplifier, 10" down-firing fiber-composite cone woofer, and frequency response of 29Hz to 120Hz. Deal ends October 31.