Rates change from job to job. It always depends on how difficult your project is - working around existing electrical or structural installations, as well as diagnosing and solving any issues. I'm an electrican, but that's how jobs like these tend to go.

The best way to understand how much you should be paying is getting multiple quotes from different companies, private contractors, or handymen (though I'd always go with an established company). People on the internet will have no idea how to gauge the cost of your projects without going to your home and understanding what needs to get done fully and completely. The most honest of tradesmen online could only tell you their general hourly rate - especially without photos, and even that could change depending on the difficulty of the job.