Indesign book - export only specified pages to PDF

That script you found would do the trick there's instructions on using Section Markers - which would be perfect for you

Export individual sections

The selected documents are exported section by section. With Use section markers in the file names checked, the script constructs PDF file names by adding the contents of the document's section marker to the document's name (section markers are set in the Numbering and Section Options dialog in InDesign). If you happen to have several sections with the same name, then the script adds sequential numbers to the PDF file names. If you opt not to use section markers, or if the section marker contains no text, then the script adds the sections's page range to the name, as in reviews_123-126.pdf. To have each produced PDF file loaded in Acrobat Reader separately, check check View PDF after exporting.

Hi Simon,

When using a book, the choices out of the box are to export selected chapters or deselect all chapters and export the entire book.

You could manally open each chapter and export pages, then combine them in a new PDF. (Ugh.)

Or if a script doesn't exist you could hire a script writer. There are several on this forum. Since Peter's script is close, you might ask him the price for tweaking it. Or check with others.

~ Jane