So I guess the humans there are either pokemon or depending on your vocation you gain stats for free.
Like:
Normal person, aka. mob lv1: 10 stat points in most attributes.
Bandit lv1: 100 stats in most attributes
lv 15 kidnapper: 1k stats in most attributes
etc...
The question is if you get the stats when you choose the vocation or you need those stats to be allowed into the vocation. If it's the latter, then it means training upgrades your stats. If it's the former, then it's super super super cheap. If someone chooses whether you can get into a vocation would make it perfect for corrupt little shits aka. nobles
and hell for the plebs.