Best Buy offers the Polk Audio 12" Single-Voice Coil Car Subwoofer
in Black, model no. DXi124 SVC, for $29.99
with free shipping
That's tied with our April mention as the lowest total price we could find, this time by $30. Sales tax is added where applicable. The 12" subwoofer features a 27Hz to 200Hz frequency response, 720-watt peak power handling, and more. Deal ends May 31.