Its extremely easy to manipulate the prices of any item on the GBT.
Testing with an alt account and nanites, took the price from 6 million> 1.2 billion per within 10 trades.
This also works the other way, with some help the price of plastic was made 10x lower import wise, this needs to be fixed asap, as it allows you to lower the price of something to nothing, buy it at the low price, then sell it and make 10x the money.
This can also be used extremely effectively to inflate your GDP. Tested with ancient artifacts, raised the price of them by 3x and they raised my GDP considerably. Id suggest removing the import/export feature from the GBT entirely until a better algorithm can be put in place to prevent this
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