Considering the complaint listed on the repair order and also as described by you above, the repair seems reasonable. Given the vehicle age and mileage, as well as the concern that the brake fluid may be contaminated (likely if it's original to the car) I would have also replaced the flexible brake hoses to save on that labor cost in the near future, so it doesn't necessarily seem like they attempted to take advantage of you.
Most definitely the cost of parts would have been lower had you purchased them yourself, but I don't get the impression from your description of your automotive knowledge that you could have done the work properly yourself. The shops need to make money in addition to paying for their continuing education, property costs, insurance costs, and utility costs. The prices they listed for many of the items do not seem outrageous considering they probably mark the part costs up at least 40% to cover their overhead and make some profit.
-Rod