Campinfan wrote:
When I was younger, we used to say "that's a ripoff" if something was unfair, overpriced, a scam or dishonest, etc.  We would say "I was ripped off" if we did the deal and then discovered it less expensive or not needed later....so I think the OP can say it was a ripoff that the dealer wanted $550 for something he could repair at $35.  
Give the guy a break....some people here remind me of the two old guys from the muppets.  Life is too short
Give the guy a break?  Maybe people here are tired of the whiners with no reason to gripe.