+1million on getting a sub from an ID company....for the same price...you will get something that will demolish that sub!
It might depend on where you are. That Klipsch sub from Amazon has free shipping, and that includes free shipping to Hawaii and presumably Alaska. Hsu and SVS subs can cost quite a lot extra for shipping. Let me draw your attention to another sub available from Amazon with free shipping: the Sony 15" 200watt SA-W3800 for $182.