Howdy neighbor! I see those limo's lined up with what looks to be a Rapid City #! I have no comments on pricing, I am new, and I am learning just like you. I would say that with what I was quoted for my truck and just as simple, I was quoted $420 installed. So, I would venture to say your price was a little on the low end. But with the free advertising you get, that would make up for any shortage! Anyways, see ya around the forums or town! lol