I recently led my group through Into The Maw . I made a slight change to the story and instead made the wealth it carried come from a world that had ties to the Yu'vath. Therefore, I made the treasure at the end of the holds of the Righteous Path to be filled with gold, priceless works of art, and other valuable shiny human stuff. But I also had included a black box containing a number of Halo devices in the form of rings or amulets. I gave them about 7 since I ruled it was the wealth of an entire Yu'vath world. The party tech-priest rolled incredibly well on his Forbidden Lore, and thus they know the effects of the Halo devices and that they are illegal by order of the Inquisition. They're first reaction to finding out that this could get them in trouble with the Inquisition was to hand over the devices to the Ordo Xenos and try to get a reward from it since so many Halo devices together is an incredably rare find. But the party rogue trader remembered my joking advice of "Always try to sell it twice if possible". Now the goal of the party is to stage an auction for the Halo devices on an orbital station around Malfi. The players already have spread the word about their auction secretly to the right people, including the Inquisition (who knew about the auction from the beginning). Their stated goal is to auction off their Halo devices to the host of corrupt hive nobels for the highest or most interesting price they can get. Then after they get payed, have the Inquisition swoop in and arrest/purge those involved, getting a reward for capturing all these faith-lacking nobles. And so they fly away back to the Expanse for a good long time, rich with thrones, interesting tech, and 5,000 elite troops they plan to use their Inquisition reward to obtain.
So what exactly is a Halo device worth? The corrupt nobles know that it would impart immortality upon its bearer, and so would pay dearly for it. What are good bids to get? My players said they'll accept money, ships, large amounts of good weapons, and resources. The one thing they won't accept is any "live" bid, like troops or slaves.
Any thoughts on the auction itself are also welcome.