I'm asking this because I've done lux trading for several days at the same place now.. I've noticed that it does NOT matter how many items the market has in stock.. The price on PE varies from 6.4 to 6.6 in tonne prices.. I have not managed to find out how often the price changes, other than it seems that it happens randomly... I just want to know why it changes. I am trying to plan effective runs, but it's hard when I can never know what price to find when I am logging in.