You can actually do it yourself. Its simple. I did it on the TSI I had without any help. Just make sure you pull the turbo and manifold together.

Take off the intake tube and filter. Move it out of the way.
Loosen the clamp thats on the turbo that runs to your intercooler, detach the hose. Move it out of the way.
Unbolt the downpipe from the 02 housing.
Take off the banjo bolts and anything else attached to the turbo. (Oil return line, etc.)
Loosen the manifold nuts, take those off. (You may need to remove both fans or one... its been a while since I did it.)
Turbo and manifold should come out, be careful with the oil return line.

There's misc little things in there I may have left out but really its not hard at all has long as you have basic tools and also some sort of breaker bar.

Sidewinder said $300? They are nuts, the most I would pay someone is $100. If you don't want to do it yourself I would take it to someone like Jerry, Brothers, etc. If you decide on that, you should check out how they do it. So when it comes next time to upgrade/swap turbos you'll know exactly how to do it.

Good luck!