I dont know if its a bug, or just exploitation.. but anyway, I would like to make you developers alert to the fact that the market prices have gone 'insane' ... there are aparently some elements out there, who have found a way to manipulate the price level, so that the prices on things are taking on crazy levels..
for example I see the sale-value of Wool currently is something like 100,000 or 200,000 (normal price 1200) ..
someone is exploiting this system