You can order a printed copy of the GNU Emacs manual from the FSF for $20. For 6 or more manuals the price is $13 each. The price may be tax-deductible as a business expense.
The full TeX source for the manual also comes in the `man' directory of the Emacs distribution, if you're daring enough to try to print out this 300 page manual yourself (see section How do I print a Texinfo file?).
If you absolutely have to print your own copy, and you don't have TeX, you can get a PostScript version via anonymous FTP:
/cs.ubc.ca:src/gnu/manuals_ps/emacs-18.57.ps.Z
which site requests that you please CONFINE ANY MAJOR FTPING TO LATE EVENINGS OR EARLY MORNINGS OUR TIME (pacific time zone, GMT-8)). A DVI version is also available via FTP:
/prep.ai.mit.edu:pub/gnu/emacs-manual-6.0.dvi.Z
If you don't have TeX you can convert the Texinfo sources into {t,n,ps}roff format with the `texi2roff' program, which is available via anonymous FTP:
/archive.cis.ohio-state.edu:pub/gnu/texi2roff/texi2roff.shar.Z
See also section How do I find out how to do something in GNU Emacs? for how to view the manual online.