Updated March 9th, 2024:
#1. Added a few additional examples of using dollars in quests (clinic in Pantagruel) and dialogue (Headshot Hue).
#2. Slight correction in the items you can buy from Itsadi the Fisher.
#3. Added the cash in value for the Gold Watch.
#4. Mentioned that Father Tooker will still keeping buying Tiny Diamonds at the preferred rate even if Lalee is dead.
#5. Added a screenshot of receiving dollars as a quest reward via conversation.