Economy and Profesions.

A family profession might include fisherman, blacksmith, alchemist, tailor, merchant, miller, and many farmers. Almost all non-adventuring NPCs should have a profession, or otherwise are getting by in a different way. (Mail Moogles without postage to send might take up fishing, or begging...)
All villages have families with duties that build the communal sense of duty and togetherness.
Elders might attend to the Great Crystal's yearly ritual as a matter of family tradition. Clans of similar tribes trade cattle and livestock during harsh winters to keep their allies against monsters well supplied. This sense of co-operation is what helps bolster the tribes of civilization against the seemingly endless monsters and brigands which haunt the ruined villages, those which couldn't obtain enough myrrh to hold the Miasma at bay.
All civilized and non-civilized races recognize the value of a Gil.
Gil is one denomination of currency, there are no subdivisions. 1 gil is one gil.
Prices are speculative and may vary based on location and scarcity, food is easy to come buy in villages. Rations might cost a lot on the road, and hunger threatens naïve caravanners and their beasts of burden, should they run out of food and water-- exhaustion creeps in...
Price table for reference. Narrate Gil as a unit of coin currency. Large bags of gil can be abstracted away for weight purposes. Allow players to track gil themselves, do not break immersion by trying to keep track of their purse. Instead, ask players if they have enough gil for a major transaction, like buying a new caravan or piece of armor. Create prices that are high and gate progression, to incentivize treasure hunting.
10 gil might buy you a decent dinner at an inn.
50 gil for a pair of leather boots.
25 gil for a canteen,
75 gil for a fresh egg laying hen
100 gil a decent adventurers kit, rope, tinder, bandages
200 gil for a fine sword, or a well-crafted Selkie stave, Lilty poleaxe, Yuke hammer
300 gil for leather armor
500 gil for chain mail armor
800 gil for plate mail armor
1000 gil for a new caravan, complete with feedstock and an animal with harness to pull it.
Everything else, like a new home in town, feel free to speculate on. Make prices higher rather than lower if unsure, as not to make the game feel too easy.