mine (going by retail prices)...

head unit: Pioneer DEH-P8400MP ... $600

subs: dual 15" solo baric L5 ... $750

amp: rockford fosgate 800x4 amp ... $400

custom box + install ... $100

total install ... $70

its about 2 g's. go figure.

how much i paid: subs(donated), box(donated), amp(donated), HU(385 shipped), install(70) = $455 total. + neons = approx $500