http://en.wikipedia.org/wiki/Hyperinflation_in_the_Weimar_Republichttp://en.wikipedia.org/wiki/Hungarian_peng%C5%91_hyperinflation#HyperinflationThis is what's happening.
The difference between what we have for an economy, and what the real world has for an economy, is that the government actually steps in to create artificial price ceilings and floors for the control of the economy.
Bear in mind that prices will continue to increase at a ridiculous rate, sometimes a little slower, but don't be surprised if the prices reach 5million for a +3 in a year.
Money in this game literally comes out of nowhere, so prices will continue to escalate, until something stems the flow of 'infinite' money.
Money isn't being circulated so much as generated right now.
Basic supply and demand. In this case, the supply of money keep increasing, while the demand for heirlooms continue to increase. The market tries to create a balance (eq), but since both are rising, the market keeps chasing the eq to literally infinity.
Which is how it's going to continue to develop. It's just how the market works.
But the new players and peasants get screwed. Eventually the "no upkeep" workaround (not fix) will not be able to keep up with the prices, and will have to be extended.