In Book I, Chapter 3 of The Lord of the Rings, Tolkien wrote, "Just why Mr. Frodo was selling his beautiful hole was even more debatable than the price."
After appreciating this example of (probably) unconscious humor, it led me to wonder: Hobbits and other races of Middle-earth did use coins as money; they are mentioned in several places. In the LOTR appendices, Tolkien gave us a tremendous amount of information about the languages, scripts, calendars, and chronology of Middle-earth, but didn't write a comparable treatment of money, which is odd considering that European histories often do include a page or two about the value of such coins as florins and ducats. Perhaps he described the Hobbit monetary system in detail elsewhere in his voluminous published and unpublished writings. What, in sum, do we know about the Hobbit monetary system?