If you want to use the number of copies feature, the page is created and then really copied. In that scenario, numbers will also not change for each copy.

If you were to create a PSM document with a large amount of pages, and use the print/skip layout function if the page number exceeds the amount asked, you can do numbering.

Also, when multiple books are ordered, it should be possible to start the number of the next book where the first left off - IF you use the upload database feature. Otherwise, again, it will be an exact copy of the first book (1 record on user input).

So, with a few tricks, you could achieve the output required. I'm just thinking that the upload database to get a number of records may not be very 'nice'.