$5 membership in Esperanto-USA for Duolingo graduates!
If you have finished any online course which gives you basic Esperanto capability, such as duolingo, lernu.net, or other great web and email courses, you can join Esperanto-USA with full membership privileges.
The Introductory Membership to Esperanto-USA is available to anyone who has completed an online Esperanto course, and is not now (and has not been) a member of Esperanto-USA. This membership provides all the rights and privileges as listed in the category '12-Month Memberships'.
Here are some benefits. Note that just about any purchase in the bookstore or registration for a “Landa Kongreso” (national congress) will more than pay you back for this extra low membership fee.
The bi-monthly newsletter, Esperanto USA
Discounts at the Esperanto-USA Book Service