There charging you for delivery and the install hours because you have to drop the gas tank to put it on. I've seen them as low as $150 so just do it your self man. I like to get quotes on service then do it my self and add up my cost and then laugh at how much money I save. I put top end brakes on my wifes car and bought jack stands and still saved $300 doing it myself $300 in my pocket blows my mind.