A raider kills the boss and the loot is yours. These are the fights that end runs, and the ones where a second set of hands is the difference between extracting with a reactor and extracting with nothing. Pick the boss, we do the fight, you keep what drops.
Every line on this page includes the loot, not just the kill. The Queen and the Matriarch cost more than the rest for the obvious reason: they take a coordinated team and they are where the reactors come from. Shredder, Surveyor and Leaper are the cheap end and are usually bought several at a time.
A boss kill needs a raider free and a raid to run it in, so it is booked rather than instant. The order appears in front of every permitted raider the moment it is paid, and you can see when somebody takes it and message them from that point. We do not quote a delivery time we cannot keep.