I suppose that depends on the rarity and threat level of the monster. Some can drop quite a bit of gil, more than one would earn working a normal job in a month. It's dangerous, but rewarding, and always needed as they're a danger to the native people of this world.

[He orders the same and carries their tray to the table so they can eat while they talk.]

I'll show you the quest board after we've finished. It doesn't see a lot of use these days, but requests still arise upon occasion.