Crisis?

[Swadius]

Guys it has nothing to do with human greed, that's just a factor.

So human greed has something to do with this, right ?

The thing is, we have a system here (that has existed for quite some time) where there is a higher amount of gold being pumped into the system (drops and quest-rewards) than there is gold being sucked out (from marketplace-buys/respecs/renaming).
That means, the longer NI exists, the less amount of value does 1gold have on the AH. Simply because people have more and more money, if you look at the large perspective, taking out the average of every player's wealth.

I remember when Metal cost 50gold :p

Why yes, this is called inflation. Worst of all, the "wages" or drops, just aren't keeping up with the rate that money drop is being made. Prices, I think, will increase over time.

This could be controlled via a powerful central controlling body like a bank, this would however require a buttload of starting capital.