Not a big reader but overheard this on the news - one of the news casters is a Huge fan of Harry - and he was reading it on E-Bay. Don't know the validity but he seemed to think it was hogwash. We'll see.
My friend's husband works at a distribution center. He HATES Harry Potter because of all the extra work and security. All the pre-orders have to be readied for mailing well in advance. Every copy has to be accounted for and locked up.
According to JK Rowing's website, the Ebay auctions for book 7 are bogus.
Editing to add: He once had to go into work at 10PM because someone thought they accidentally erased 300 orders.