Not sure how long they will last, but they currently have 5. That is a lot of sub for $1000 (note that the S1800 is normally $1300 and the S1500 is normally $1000). Includes shipping. https://www.powersoundaudio.com/collections/outlet-center Quick info: 18" sealed sub with 725W ICE amp Tunable via "Room Size" adjustment knob Made in USA (even the amp)!