@NiGhTShAdE is correct to a great extent.
Zubair, take example of NKN/Koyo bearings - they are made in Japan and available at every big auto part shop. if you buy them from open market, it will cost you around Rs. 1700/bearing for one wheel original japani. however if you buy same from Suzuki, they will sell same thing for over 6k a piece for sure - is a FACT that dealerships charge insanely - they have a showroom to maintain, technicians are highly paid, inventory costs, certain standards to maintain etc - therefore they charge inhumanly high. its just like buying a can of Pepsi from a local super store for Rs.50 and buy same from Marriot for Rs.500+GST+WHT+****** 