Some reports in PAF allow you the option to start every generation on a new page, others do not.
Some printer drivers allow you to print 2 or 4 pages on a single sheet of paper, so you might want to check the advanced settings for your printer driver.
I make heavy use of PAF's Preview feature, which saves me a lot of paper. I don't do any "trial runs" of print jobs. I also have a PDF writer installed, which allows me to easily send my "printed" output to a PDF file instead of to paper.