Guildmaster Bradt simply listened to Rui continue with his offer until he was done. He had fallen into thought at how far the Kandrian Empire was willing to go to assuage his concerns.
His only problem with Emperor Rael's previous offers was that they required him to surrender far too much power to the Kandrian Empire, leaving him beholden to the nation. It didn't matter how trustworthy the Kandrian Empire was; he simply couldn't offer such a high level of trust.
This new offer cleanly circumvented that problem by simply offering to sell their coastal territory and surrender it to his full control.
Of course, that didn't mean that it was absolutely safe from the Kandrian Empire after it would still be on their border, having once been inside the border. However, even he understood that the Kandrian Empire meddling with it after surrendering all rights to it was an extremely unlikely event.