As with all things you are buying , no different to a shop , the price tag is an invitation for you to part with this amount for the goods , it is not set in stone . So the guy wants 59p for a mars bar , you can of course bid him on it. He will or wont , hence thats where your RRP recommended retail price comes in.
Some people want the comfort feeling of a big multinational , some don't , as long as you get apples for apples you pays your money.
However all business is about trust , so when you find a good firm , hang on to them , times are changing the contractor is now in a strong position , I have always been fair to the people I have worked for , and I expect them to be the same.
A good friend of mine quoted some work at the local golf club , and low and behold they moaned about his price ,(he wanted what he quoted) but when he queried his membership fee ,that was not negotiable , cake and eat it springs to mind.