Many iPhone accessory makers weren’t allowed to lay hands on a real iPhone, and resorted to making models and sending their accessory prototypes to Apple for comments, to make things fit and work.
Meanwhile eBay is already featuring sales of iPhone domain names (iphone-discount-sales.com for only US$59.99!), iPhone email addresses (at Yahoo and Gmail — would you believe firstname.lastname@example.org has two bids on it? No, I don’t really believe it either). eBay also lists cases and other accessories, though as noted above, there’s no way of really knowing if they’ll actually fit the phone.
And then there’s the sales of information that will allegedly allow you to make lots of money from iPhones or somehow acquire iPhones and other consumer electronics for free. Does anybody really buy this stuff?