You did the right and honorable thing by pointing out their mistake and returning the Mac. In these days when everyone selfishly scrambles for themselves at every opportunity, it really affirms a civil society when you think and act selflessly. You could have easily kept the computer. But it would have been wrong. For the trouble of having to ship it back to them and the time wasted in resolving this matter, I think it would be reasonable for Apple to make at least some small gesture. But in terms of "expecting" a reward, I'm not sure why people think they should be rewarded for simply doing what is right. Anyway, thanks for being a good example in a world calamitously free of honest people. This is the kind of thing that I'd expect from someone smart enough to be a Mac user.