In any city with a great number of nobles you will always find an auction house, a place where the rice can flaunt their wealth for trinkets and baubles they probably don’t need. In the case of my party, the goods up for action were their ship’s storage lockers after they ran afoul of the law and their quartermaster was taken in by the police. Held in the back room to identify her cargo, the party had to rescue their quartermaster and outbid rivals for their items they kept in storage before they could be used to fund her defense at her trial.
The map includes an area to post starting bids and items coming up for sale in the auction. I had my players have to compete with six NPC bidders they could distract with conversation checks or intimidate into leaving. Of course, my party just set fire to the storage room to clear out as many as they could before resuming the bidding. Whatever works!