Ok. The extension change seems understandable given it is not a remote change.
Mea culpa folks! Looks like I had a misunderstanding and thought that was a remote change. Complaint about the extension change withdrawn because:
1) Did not realize that cannot be done remotely
2) I don't recall what the price was for that one
So... I stand corrected there.

However, there are other things (remote changes) that seem a bit steep given the fact that they are a five minute change. For example: changing our ending time by half an hour Mon-Fri. (That was the one that was $75.)

By the way, thanks to everyone for their quick replies -- both this time and other time I've posted questions! You guys are a great board!