Runesmith

Ten days, it took Chris a total of ten days to completely assimilate all the information that was available to him in the Runecrafting Guild.

Reading all that information isn't cheap. A lot of gold he earned from the auction house disappeared instantly. This wouldn't have been the case if he was a member of the guild, but he chose not to.

He was already a member of the Magic Tower and the Adventurer's Guild.

As he was a mage, he had to be a part of the Magic Tower and the Adventurer's Guild didn't care if you were a member of another organization as long as you completed your tasks perfectly and on time.

This was not the same for other organisations. They can never be a member of a single organisation outside of organisations like Adventurer's Guild or Mercenary's Guild.

If you were already a member of an organisation, then all you could become would be an allied party. Even that status wouldn't be given to anyone at wish.