System mechanic used twice this chapter, ending with Shanty Town sold for a hat and some gold.
Ferdinand opens with one: a trade request to the The Princess Posse asking for Simoom and Ferdinand's Turban back, which Princess Donut says they rejected immediately - a notification Carl vaguely remembers seeing and then forgot about.
The second is the real one. The Princess Posse makes a trade request to Team Retribution for the Mayor of Shanty Town office. Carl preempts the accept by simply placing Quan's Bowler Hat on the cat's head. Ferdinand notes the system will not let him transfer the town without payment; Carl answers that they have gold. The trade request is accepted, and the truce with Team Retribution is renamed The Good Guys in the same breath.
The mechanic by which a mayorship, a hat, and an alliance name all change hands.