Is this too much to pay?

[DebSP]

Much better to work on their bikes so if you break something you're not stuck with a broken bike!

True enough! And I just went back to look at the course description and found that you have the option of bringing your own bike back on a third day to work on it under instructor supervision. I thought that this was extra, but upon re-reading it I think it is included! Hopefully I wouldn't break something that I can't repair that day!