I also want to chime in for better price management. I think it would be nice if you could set it a few different ways, for example:
1. Percentage of profit margin over your production cost. This would be nice if you have a high market share and want to just make sure that your factories or retail stores throw out a specific amount of profit.
2. Percentage of price around the cities average. This lets you set a competition behavior based on what you want to do. Do you want to sell high quality prices at a certain price over the average or do you want to get into the market with dumping prices? It should probably send a warning if your setting starts to sell prices at a loss (less than production cost)
3. Percentage of price relative to a competitor, so you can say that you always want to sell at a higher or lower price than someone you compete with. If the competitor stops offering the product, this option should probably throw a warning and disable itself, keeping the price at a fixed price at what it last was.
4. Fixed price (what we have now)
I do not know if we can have multiple options to do the same thing, but it would be nice if we could. Basically the interface should allow you to select how you want to price first (from one of the above options for example) and then set the price. It should not put all the options on the interface at once and clutter it up too much.