Pyle 8" Slim Active Amplified Subwoofer

Cheaper at amazon $99.
https://www.amazon.com/Pyle-PLBASS2-8-Super-Slim-Amplified-Subwoofer/dp/B00BMRE0RE/ref=sr_1_1?ie=UTF8&qid=1472111406&sr=8-1&keywords=PLBASS2.8

I didnt bother looking further

$99 + $18.25 shipping.