I'm sorry, have I done something to offend you personally?

Do you have some sort of grudge against FFXI in particular?

My reference to fiat money was not in regard to any online game, but to the real world. As many nations in the real world use a fiat money system, first used in the 11th century.
Your argument was that any 'old' system was inferior to any new system based solely on its age.

Any FF11 is GOING to be brought up in any discussion related to 14 simply because the games are already so similar. They come from the same developer, and even the same design team.
Both games use the same, although renamed races, the same character models for many of the monsters, and many of the classes have the same abilities.

I'm sorry you fail to see the similarities, perhaps you never played 11, possibly due to its difficulty curve early on. But the two games are very strongly related.

Taru Taru = Lalafel
Elvaan = Elzen
Galka = Roogadoog
Hume = Hyurrrrr
Mithra = Mi'qote

Limsa = Bastok
Gridania = Windurst
Ul'dah = San d'oria with a dash of Aht Urgan

And to continue off you "What the npc buys it for is its only value" arguement.

I am going to assume you own a car, or at least know someone who does.

A scrap yard will pay usually around $400 for any car as scrap, no matter its condition.
Since the vendor will pay $400, any car is worth $400. That is its one and only value because that's what the vendor will buy it for.

But if you argue that this isn't a correct example?

When you sell a car for scrap, it becomes destroyed and no longer a car, when you sell an item to a npc, it is removed from the game, and no longer an item.

While a dealership might give you more for the car as a trade in, or a person may buy it from you for more money, it is only worth $400 because that is the 'vendor' price.

Want to take this further?

Old currency, like almost anything on this page: http://www.coinsite.com/html/uscoinprices.asp

The face value for a 1916 liberty quarter is $0.25, but it is worth $2000-3000.

Face value is not actual value on most items. I'm sorry if you cannot understand this.

I honestly don't understand why you are so hostile.