How did you come to the $200 figure?

Your time does have value, but it’s in terms of opportunity cost, not hourly wage. Presumably you wouldn’t have made $200 had you not gone to the Apple Store (unless you went when you were supposed to be working and have a job where that time becomes unpaid).

I'm paid by the hour and the Apple Store is a block away from my place of work, so in this particular case it is pretty clear cut. I realize it is different for people paid a fixed annual salary.

Although in hindsight it probably felt like I spent more time there than I actually did. I think the $200 is fair given that I would normally be quite willing to pay to avoid that kind of unfortunate circumstance.

And of course that leaves out the complication of pre- vs post-tax wages, retirement savings, etc.

Not the OP, but I just figure that I could be contracting somewhere at any point, really, so each hour costs me my fee.