I had posted a proxy server people were printing through, but it won't work if you've already printed the coupon, as the print limits are keyed by -machine- and not by IP address. They look at the unique hardware key inside your computer's processor and work print limits on that -- so it will already know it printed for you. (Unfortunately.)
The upside is that if you have more than one computer sharing the same IP address (home network, etc) with this method, you can print more than one coupon per IP if they're with different machines. Make sense?