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Wow they mark up the parts real well. Lights material cost is <$200 http://www.marinepartdepot.com/bowhha...owhha.html add maximum of 3 hours (most likely less) install time (say they are real good and charge $75/hr) $225 + $200 = $425 max. The $650 is more than 50% high.
I would shop around a little more just based on that line item.