Hmmm, I'm not so sure, but I'm looking at it from a crafter's PoV. The more accessible a history is the more price wars go on. Eventually it gets to the point where it is all but impossible to make income from crafting. FFXI had this problem and I believe the AH history and even FFXIAH itself was a major factor in it.

I realize it is a delicate balance. However, crafting is my favorite part of FFXIV. If it got to the point where it was near impossible to make a decent profit doing so, like XI did (at least compared to other forms of income such as farming), I probably would lose all interest in the game.

Also "sale" and "sell" are two different words. You might want to learn when to use them correctly.