Can you print only pages with a specific master page designation?

Straight to the point, methinks. Extensive commenting was free, today.

// Gather Master Spread names
masterlist = app.activeDocument.masterSpreads.everyItem().name;
// Create a simple yet effective dialog
masterDialog = app.dialogs.add ({name:"Select Your Master",canCancel:true});
with (masterDialog)
{
          with (dialogColumns.add())
          {
                    with (dialogRows.add())
                    {
                              listbox1 = dropdowns.add ({stringList:masterlist, selectedIndex:0});
                    }
          }
}
// Get input
if (masterDialog.show())
{
          selectedName = masterlist[listbox1.selectedIndex];
          // Build Print string
          pages = [];
          for (i=0; i<app.activeDocument.pages.length; i++)
                    // What if there is NO master page applied?
                    //          .. then it's NULL and doesn't have a name, that's what
                    if (app.activeDocument.pages.appliedMaster != null &&
                              app.activeDocument.pages.appliedMaster.name == selectedName)
                              pages.push (app.activeDocument.pages.name);
          // Make a printable string of it
          printpages = pages.join(",");
          // Feed it to your current Print settings
          app.activeDocument.printPreferences.pageRange = printpages;
          // Show the Print dialog
          app.activeDocument.print (true);
}