What does it cost for convertible top replacement?

What is your question?

I have the 350Z roadster, and it's about time to replace the top. I know I can buy a replacement online for a certain amount, I'm wondering what the labor might run. I'm sure if I do it myself it'll get done, but I'll probably take 3 times as long to do it, and probably break a few things in the process, and come up with a bad result.