Why do people pay so much more for iPhones on eBay?

I was looking to buy a 32g iPhone 5 on eBay, and saw that some (that ended today) sold for about $900 (locked on AT&T)! You can buy this same phone without contract for only $650 on Apple's website. What is the meaning of this?

Added (1). @Mark read more carefully… You can buy them on Apple's website… This has nothing to do with supply and demand.

Supply and Demand

Because people are stupid.

People always seem to pay more on ebay for popular items its mad when you can shop around elsewhere a lot cheaper

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