Don't want to wait on a build and used is cheaper honestly I have a dd 9900 18 2010 tsns 15 looking for stuff I haven't had like, cactus sub,tc souunds ultra eclipse ti pro,ground zero pl,atomic apxx 4 inch coil,rockford fosgate trf.I had aqs hd 15 hdcs 12s 15 18s,fi btl fully loaded before they started the neos pretty much all store brands in illinois.My price is limited to I don't want a sub that I could spend 50 more dollars and buy it new.Also if the sub is used it's already broke in so I don't have to wait to beat on it my tsns has 5 hours on it still not broke in.