What would result if you associate an Avatar:Merchant and a Thanathomancer?
A very valuable service, selling life. The client looks for the victim, ¿victims?, for the ritual and is responsible for the cleaning.
What are you going to pay for?
Haven´t you see the ads, yet?
Love it.
Works out nicely for all involved.
Maybe linkable to a Hitman: codename 47 style scenario.
For me, the idea is closer to Hostel (the film), about people paying for killing voluntaries victims.
Better yet, the guy is both a Thantanomancer and an avatar of the Merchant, and he does business with the poor and the desperate. Using his Faust channel, he provides them with “the good life” for a set amount of time, and then they become willing sacrifices. Talk about a steady supply of significant charges.
I think the only think you need for having willing victims is found somebody desperate enough. Imagine somewhere really poor, you just need to pay his family a huge amount of money and that´s all. The victims sacrifices himself for the family and the family has enough money for living well a lot of time.