Hello Britny,
The answer to your question is one that only you can truly answer.
The thing about going to a dealer for Auto repairs is this. You are paying for the Dealers Experience in making the repairs that you can not. The dealer has access to Factory Replacement Parts. These usually come with Warranty's , and the Mechanic that makes the repair has a proven expertise, which gives you a legal protection from any damage caused while the part is being replaced.
So in my personal opinion, yes the price is fair, when you consider the time required to make the repair, cost of Labor, and cost of the replacement part, and local taxes.
You could possibly make the repair yourself and save a few dollars, by obtaining a new lever from an Independent Auto Part Store Like Reilly's, or Auto zone, and having another mechanic install it. Or you could go to a salvage yard and find a similar make and model, and remove the Lever, and then reinstall, but the problem with this scenario is that the part you obtain will be just as old as the one that broke, and is likely to suffer the same fate as the original part from your Boyfriends car.