(yes, I'm shamelessly bumping my own post because it was on a very underpriviledged position last time, rs, guess almost nobody had the chance to read it unless going back a page)
I think that happens for a reason more explained by psychology than by economics...
OK, so, first we have to acknowledge the LEX MAGNA, the mother of all laws of MMO economics. Which is the following:
"The only thing of true value in any MMO economy, is TIME."
Yes, time. Essentially, every time you buy something from another player, you are paying him for their time spent doing something in-game you can't/don't want to spend time doing yourself. Be that leveling a class, farming an item, spiritbonding materia, etc, etc. Now, the tricky part is, how do you measure how much YOUR time is worth? Well, if you are a teenager with a truckload of free time, it's pretty obvious that you don't think of each individual hour of playing time as having the same ammount of inherent worth than, let's say, a father of two who can log in every couple of days for 3 hours tops.
So, FOR THAT GUY, the teenager, getting 40k Gil for the time he spent making that item is about enough, he simply doesn't care that much, he can make (or farm) more if he wants more cash. And he rather have the money ASAP than having to wait a day or 2 to sell that item. He won't log off after putting that in the MB to sell, he'll continue playing and there's stuff he wants to do with that Gil. Now, of course, for the Family Man with little free time, this seems outrageous, but that's what you get with the level of free market you have in MMOs. He who can play more dictates, the others get the short end of the stick.
