I feel your pain.
Some of the parts prices seem a bit out of line. For your own piece of mind, check out the site's sponsor. Phil at Fastlane is a great guy, and had good prices. I've never had a wrong part delivered. His service is fantastic, and he speaks english! I needed both rear brake cables to pass inspection, and ordered them a little after 4PM one day, and they were sitting on my front porch when I got home at 3"30 the next day.
I second the notion to DIY--if you have the time and a place to work. Where else can you get the satisfaction of doing a job well, and paying yourself $70 - $110 per hour. Remember money not paid to someone else, is money earned.