Having a table of the average prices for goods would be handy. I've been holding on to one of every good so that I can have it as a reference, but when the jerks come and steal a resource, they also steal my reference, which is most unfortunate.
For those of you that are having problems not getting the Achievement:
You need to make sure that you are connected. (The green plug in the corner of the chat/achieve window) It turns red when you have to open the game in the other window. When you come back to your game there will be an option to reconnect you. If you don't hit that, you won't get the achievement.
I played through the game twice. The first time I also didn't get the achievement, because I wasn't connected. The second time I reconnected and got the achieve.
Hope this helps.
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