I have been looking for a copy page plug in.
There were not many, but there were a few, 1 of them I decided to install, it worked for what I needed, but not how I would have liked.
My boss has put up a site that has all 50 states, in multiple categories, and he put them all in 1 time and in the incorrect area.
So to save time instead of going one by one using Duplicate Post ( http://wordpress.org/extend/plugins/duplicate-post/ by lopo)
I modified some of the files in the Word Press Admin and some in the Duplicate Post plug in.
So now I can select all the pages I want, select "Duplicate" from the "Bulk Actions" drop list and hit "Apply"
This will show a box similar to the "Edit", you can choose the parent category you want them to be placed under and it will Copy all pages into that parent page.
1 Plug in to Install ( http://wordpress.org/extend/plugins/duplicate-post/ )
4 Files to Edit
Let me know if you would like this code