Rip off, they charged me $800 for one xenon light ...

Rip off, they charged me $800 for one xenon light 2 blades for the windshield and and 1 oil change, so I check the price of the xenon light, on amazon.com was 75 bucks, on the Audi dealer website it was $129, they charge me $275 plus $200 to install it.