Roughly this is what it would cost is I paid retail but I dont I get cost price from my work.
2 x Caliber Competition Pro Amps - RRP £550ea (Only a couple of these in the country)
2 x Caliber CWX Subs - RRP £200 (Only a couple of these in the country, same as JL W6 subs)
1 Set of 17" Polk Momo Components £550
Phoenix Gold Cables and accessories £300
Installed my self, we after all I do do a bit of installing at my work £2500 For 2 amps, two subs and 2 speakers. But it is absolutely banging, I had it up at a show and it was had a sound off with the JL demo car, the Audi any on seen it and mine won.