Wow talk about a change of opinion (I'm talking about iPhone owners, of which I am not one, not Apple) in a short time.
A $100 is far from a $200 refund, especially when one considers that between its margins on products directly from Apple and that $100 may make people spend more, and yet people by and large appear to have done a 180 in their anger towards Apple.
However, I'd say that Apple deserves these kudos. Not for making what is not a huge sacrifice, and probably a good investment for its strongest supporters (I would actually pay more for Apple stock after this), but for really leading the way. Not only did they remove a price that was in many ways too high in the long-run, but said they were wrong (how many presidential candidates have done that?) and acted swiftly to make up for it.
This move buys even more goodwill for an already popular company, and sets a good example for other businesses. Apple is doing better than Microsoft, and Google (which has similar leanings in many ways) is beating Yahoo. Imagine an airline, retailer (there are some, such as Costco), etc. acting like this, and you'd be willing to pay slightly higher margins for that service.
Above all, above product quality and customer service, it (even a small move like this) defines the spirit of the company. While habit has made me a PC user, you can bet I'm not hanging around any Microsoft forums (ummm, are there any other than tech support? Certainly not like the Apple following).
Congrats to all of those who can now get a free... shuffle?