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Thanks for asking here at JustAnswer
This is a tough question to answer, many variables. The best advice I can give you is get pricing up front on the camera. When you know what and where the problem in you can call around and get at least three estimates for the needed repairs. That will give you a good idea where the price should be. Most companies will negotiate on the price as well.
I know this is not a direct dollar amount answer, I couldn't see more than $3,000 for a complete replacement from house to street.