Consider this:
Shops will run out of stock
A few lucky people will have the very last of them
They sell for insane prices
Items somehow \"disappear\" raising the price even more
People sell the items to someone desperate
People get rich off of them
Prices raise more due to person claiming to have his item stolen/disappear
etc...
Its going to be another Runescape, supply and demand, but without the demand, just the supply that keeps getting lied about and prices getting haggled and increased...
EDIT: Oh, and to answer this \"item wanted\" comment, heres a little timeline about that
Person wants an item
Person saves money for the item
When person gets enough money, they go to buy one
Other person calls that person a noob, and says the price increased by another 4 million trias in a week
Person gets pissed and stops playing