10in clarion 800w sub mtx terminator amp and wireing kit $150

or

Selling like new 12 inch 1300w Sony Xplod Subwoofer, Sony Xplod XM-255EX Amp, and a 12 inch Subwoofer Box. Everything is in very good condition and the Sub was used for about 4 months. $175

or

$100 firm
10" JL audio sub in box and p3001 rockford fosgate amp.
Good condition.

 

forget the sonys, but without knowing the model numbers on the subs or amp it doesnt help, no point in having a 400rms sub if the amp only makes 100rms

 

10" JL with the fosgate amp seems alright. hopefully it's wired down to 2 ohms so you get 300rms outta the fosgate amp.

then all you would need is a nice sealed enclosure for the JL and you are set

 

yes it is

 

Depending on the sub, I'd say go with the JL RF combo.

That's cheaper than a 22nd st hooker though, so don't expect much.