I just did mine a few weeks ago. I did the work myself but the parts ran me right around $500ish. However, I did it as inexpensively as possible and took the pushrods out the top as oppossed to buying adjustables and I kept the stock cams.
If you are buying cams that can add another $300 bucks right there. You are probably looking at around 800-900 for the parts and the rest is labor. At the typical rate of 70-90 bucks an hour for labor that can easily add up to several hundred dollars.
All in all I think the price sounds a little on the steep side but not outrageous. If you really want to save some money I would recommend doing the work yourself. It's not nearly as difficult as you think and it's actually alot of fun. I had never done a project like that but I did it without any problems whatsoever. Good luck