How do I batch transfer several Pages documents from my iPad or iPhone?

The easiest way seems to be to use iCloud. Activate it on the iPad with Settings > iCloud > Documents & Data. This will automatically send all your documents to Apple, and you can then download them on your Mac.

On the Mac or PC:

1. Go to http://www.icloud.com. 
2. Sign in with your Apple ID.
3. Click on iWork.
4. Command-click (ctrl-click) on all the documents you want to download.
5. Do NOT click on any of the many "Download" buttons.
6. Click on the wheel in the upper right corner and select "Download document..."