A:AnswerIts not included in the price and it varies from store to store i believe. Somewhere around 60-100 for the install plus the wire kit that you will need.
A:AnswerIt's definitely 500 watts RMS. I also purchased a 600 watt RMS amp (CX600.1, certified for 675 watts RMS from factory ) paired great with this sub. Just make sure it's tuned right to feed the sub the correct amount. There's plenty of Youtube videos on how to do this with a multimeter.