This doesn't look like to be very gentle to the book. There are better book scanners available like this one:
http://www.treventus.com/buchscanner...bot_fotos.html
It will turn the book with air flow. Also 2500 pages per hour I have no idea what it costs, but I guess one can hire a chinese factory a long time until you get the price of any book scanner. Thats why also google books currently hand scans their stuff in cheap labor country instead of buying expensive scanners...