Noncommercial : $AUD60, $US50, $CDN60, DFL120, .UK39
            Systems that qualify for this category must be
            physically run from a noncommercial site. A site is
            considered to be noncommercial only if it is a private
            residence at which no commercial activities are
            conducted.

            Commercial/1  : $AUD150, $US120, $CDN150, DFL280, .UK95
            If the system is physically run from a commercial site
            (ie. the site is not a private residence, or commercial
            activities are conducted at the site), but does not
            generate revenue as part of the PRIMARY commercial
            activities conducted at that site.

            Commercial/2  : $AUD350, $US265, $CDN350, DFL625, .UK235
            If the system generates revenue as part of the
            primary commercial activities conducted at the system
            site.