Ouch, Im sorry for ya.
The reason these probably sounded better is probably due to the box.
See, in a store you have a big air volume. Subs in bandpass will just plain sound louder... Since its like a box inside a box, being one side sealed- other ported.
Now look at a sealed box... One box only... Lots and lots of air in the store to compress compared to the bandpass...
For $220 you could of bought 2 TC Sounds TC1000 subs that will butt rape them Jensen's in every way conceivable. Hell, just one TC1000 would
Building a box isnt hard if you just research. Otherwise you can spend 200 really easy having one built for you.