People remember; say no to Chaos.
Paying Chaos worshippers is not a good idea. Now if we had time to settle down in the area and work on turning them away from Chaos it might be a decent idea to have some working relationship. But this looks like to be a lone deal so not a good idea. Which is why I will not vote for anything more than safe passage.
Chaos worshipers are not Daemons and paying would only cost us a little gold. The Karaz Ankor is practically swimming in gold. Blood is a far scarcer resource.