Well, it's almost over and I bought 500 Pots of Gold TWICE, and there is still no way I am gonna get more than the big building, MAYBE the upgrade on that and one small building that I probably got for finishing quests. I made a lot of mistakes at the start, including buying the green boxes and upgrading ALL of my managers to full. As stated above, when you start off making bad choices trying to figure it out, you're sunk. There just are NOT enough Pots of Gold, or not even quests that give them. YES! I picked up all of the instances, got the 100 points several times, even 200 once or twice AND a 500 piece instance prize. I'm almost done with Town #4 and I'm hanging onto my last 600 Pots like they were real Gold in hopes of getting something out of the Green Boxes.
I have towns in two more worlds (one large, one tiny) and I have no clue how anyone is going to finish this.