I have created five discrete Pages documents, each a single page in length. Not duplicates, not Save As. They are named doc_1, doc_2 ... doc_5.pages.
When I select them individually in order via Finder list view, they not only do not print in order, and print several other pages with garbage.
So I wrote a very short AppleScript that collects all of these Pages documents in alphabetic order to a list, and then loops through that list in Pages, opening the individual document in alphabetic order, and the printing that document to my Samsung laser printer. You can see the files opening in order in Pages, and yet, when printed, I am getting several additional pages with gibberish on them. Surprised me. I then reset my printing system, and re-added the laser printer via AirPrint again. No change when printing the Pages documents. Processed in alphabetic order, but printing junk.
If I manually select an arbitrary document, open it in Pages, and manually print it, the print out is normal.
When I convert these five, single-page Pages documents to PDF, and then singularly select each in alphabetical order in the Finder, a ⌘+P opens each one in order in Apple's Preview, which then prints them, and yet for five, one-page documents, I burned through 20+ pages of junk on the printer.