Inside Trade was created by a group of friends shortly after The Elder Scrolls Online was released. Although at the time we thought of it as a way to sell items to each other, huge trade guilds quickly became the best way to sell, making Inside Trade be forgotten for nearly a year. As members left the game, the abandoned guild became a 'personal' bank for a few members, and after a while, not even that.
But as the few remaining active members played, they realised it was important to have a reliable trading guild, one where leaders wouldn't leave, where things were taken care of.
There are many trading guilds out there, but we knew none.