I'd be surprised if the labour would be over two hours. I replaced the rear passenger handle (not that I use it, but I didn't want water getting down inside the door, and the duct tape didn't look great), and I think it took me about an hour total.
If you're a handy type, check out some YouTube videos for a how-to. It's not a complicated repair, and you'll save some $$$.
Call your local Ford dealer and ask what the book time is on it, and you'll have a better idea of what you'd have to spend based on what your mechanic's hourly rate is.