Originally Posted by
BikeWise1
Many of my high-end customers are professionals whose time is worth more to them than the comparative pittance they "save" by doing something like this themselves. Others are neither inclined nor able to do mechanical work. I have customers who are challenged by the idea of airing their tires and lubing their chains once a week. Others come in with tires ridden down to the carcass, and manifold other issues that they "didn't notice".
That's why.

That is true I am sure. But my comment was in response to a suggestion that the OP buy the tune up and then watch how they do it...implying that by doing so you could figure out how to do it yourself. If that is the case, just save your $50 and watch some free videos. If you don't have the time or inclination to wrench on your own bike, then by all means take it in.
I was on an organized group ride several months ago when this dude got a simple flat. We all stopped for him and it was soon very obvious he had no idea what to do. A couple of other riders jumped in and did the repairs for him...while he stood there watching and talking on his cell phone. Sad.