LEGION OF SORCERY
The Legion of Sorcery is a world-wide magicians guild with a guildhall in Bookburg, Polychronopolis. The stated goal of the Legion of Sorcery is to act as a mutual aid and protective society of magic-users of reputable quality. Members can use the library, invite guests into secure conference rooms (unless in use) and can themselves sleep at the lodge or guildhall for 2-3 days when arriving in town. Legion members have secret signs and handshakes to recognize one another and are sworn to not knowingly harm a fellow member or face expulsion or worse. Some Outer Circle members wonder aloud what secrets the Inner Circle hide, but the possessors of such wagging tongues usually do not reach the Inner Circle.
There are only 2 levels of membership in the Legion of Sorcery: The Outer Circle and the Inner Circle. Outer Circle membership is open to level 1 or higher magic-users, costs 20gp per month and allows access to a basic level spell library (enough to research level 1-3 spells or potion formulae).
Outer Circle members can buy 1st or 2nd level scrolls from the Legion Scritporium for 200gp for first level scroll, 400gp for a 2nd level scroll, with all Canon spells being generally available. (Likewise, they can sell first level scrolls to the Legion for 150gp, and 2nd for 300gp).
Inner Circle membership is open only to magic-users who have been nominated by another Inner Circle Member (and the process is very mysterious) and costs 500gp per month and allows access to an advanced library (enough to any spell or item formula). The Guildhall is in Bookburg, there is a lodge at South Gate too.