Digital BW, The Print

This is what Roy's site says:

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The current product has two distinct parts, the print engine which is  
based on Gimp-Print and the Quad Tone Profiling part that is solely  
my own work. The Gimp-Print code is licensed under the GNU General  
Public License.

The QuadTone Profile part is licensed as a Shareware product. You are  
free to download and try the product. It is a fully operational  
product, there are no disabled parts or dongles. If it meets your  
needs and you want to use it for your regular workflow, please come  
back and pay a shareware fee of fifty dollars $50. This fee can be  
applied per user so one user can use as may printers as he/she wants,  
or the fee can be applied per printer so one printer can be used by  
many users. The fee will also entitle you to any bug-fix updates.  
Profiles distributed here are included and others are free to swap  
and distribute profiles without restriction.

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The problem with Roy's description of fees is that there are *three*  
distinct parts:

    1) Print engine (free under the GNU license)

    2) Profile utility or utilities (shareware - $50)

    3) User interface for 1 as well as 2.

Since I have no idea how to use Gimp-Print (which is on my Mac) to  
print using any of the QTR profiles, let alone manipulate ink  
density, etc., I paid my $50. That $50 gave me the right to use an  
interface and set of programs to do things I could not otherwise do.  
Even if I don't want to "roll my own" profiles, I need the  
interface... and that's Roy's work. I don't mind paying for it.

Myron