GSS materials are currently available for free.
However, we appreciate support and to contribute, please buy "licenses"
by clicking on the blue "Join GSS" that you may find on many GSS pages.

Users can create their own print copies as needed, at their own expense.

The Global System Science program is supported by licenses as well as grants
we successfully apply for. Since grants have been harder and harder to come by,
users who "Join GSS" (paying license fees), assure the highest quality and
future availability of GSS materials.

See also Strategies for Computer Use with GSS.