It depends on what brand you get. A decent set will be in the 150$ range. However If you want to have SUBS + Tweets/Mids you will need 2 AMPS and a distribution cap + another power wire kit.
If your lookin for some knock this is what Id go with. You can probably get it for under 1,000$ on ebay.
2 12" Kicker solobaric L7 or 2 12" JLaudio W6v2. That will be about 400$ total. Grab a 1200.1 JBL amp around 200$. After that go to a local shop or place that can build a boxes for subs 50-100$ shop around. Most people go ported for big bass, I think you want 1.3CUfT per chamber with those subs (Im not sure, go check their websites). Then for Mid/highs Id get the infinity kappa series or Rainbows. Those are like 200$. Grab a 2 channel 100 watt amp for those around 100$. You shit will knock.
If your lookin for some knock this is what Id go with. You can probably get it for under 1,000$ on ebay.
2 12" Kicker solobaric L7 or 2 12" JLaudio W6v2. That will be about 400$ total. Grab a 1200.1 JBL amp around 200$. After that go to a local shop or place that can build a boxes for subs 50-100$ shop around. Most people go ported for big bass, I think you want 1.3CUfT per chamber with those subs (Im not sure, go check their websites). Then for Mid/highs Id get the infinity kappa series or Rainbows. Those are like 200$. Grab a 2 channel 100 watt amp for those around 100$. You shit will knock.