After Minos paid for the 50 techniques, that old man quickly checked the contents of the two bags and then left that room to pick up the items purchased by this young man.
That was a special purchase, something this old man wouldn't usually see around here. However, aside from the little curiosity to know where Minos came from, this old man wasn't all that concerned about it.
Although few people bought copies of techniques from this specialization and Minos' deal was grand, professionals in this field generally earned very well. After all, in addition to being few, they were also involved in widespread matters, as in trade negotiations.
Consequently, like the poison masters, the service of spiritual judges was not cheap. On the contrary, it could even be considered one of the most expensive of all spiritual professions!