what should i pay for
qlogic bandpass box and 2 12" polk DX's?

this is for used ones..
NOT including an amp or installation of the AMP

i've seen about a hundred for the subs. and 160 for the box.. so would 250 be good?? or should i try to get lower??

give me a link to a place that has the price lower!

also your guys' reviews on these.. i heard the box is awesome and the polks are alright.. but from my understanding for rock,blues,jazz, punk music the subs are perfect (is this right?)and that " they can produce much more volume off a smaller amp and they are more accurate " (correct?)

so if i decide to do this is this good price and would you suggest i do this?
150 (box) +100(subs) + 100(amp) + 90 (installation) = $440

good plan or not?