Check out this post where Seth Godin gives some really good ideas about how Apple might have better handled the price change of the iPhone. See it in Seth's Blog:
-- Free exclusive ringtones, commissioned from Bob Dylan and U2, only available to the people who already had a phone. (This is my favorite because it announces to your friends--every time the phone rings--that you got in early). -- Free pass to get to the head of the line next time a new hot product comes out. -- Ability to buy a specially colored iPod, or an iPod with limited edition music that no one else can buy.The key is to not give price protection to early buyers (that's unsustainable as a business model) but to make them feel more exclusive, not less.
(from: How to spend $20 million)