just a couple of suggestions. (probably been posted before)
Firstly having made the mistake of building gold mines, smelters and coinage ive now realised that economically they were a total waste of time.
They cost just under 7k of tools and 6k of marble and hardwood and yet they produce almost nothing per day.
Even with an upgraded mine the production is awful and you either need to spend money on parrots or rebuild the mine when it runs out.
The 300 gold you get from a mine makes 150 bars (with the addition of 8 coal) which make 37.5 gold in the smelter. You could have sold 400 hardwood or marble on the market and made 40 coins and saved the other 4k of resources it took to build.
ok moan over.
Could there also be a daily value of goods traded on the market as some other games have. Its quite hard for new players to guage the worth of goods and you often sell your resources cheaply early on without realising you need them later or are being ripped off. I've also seen messages within guilds to new players telling them to trade their horses with then or selling goods at over inflated prices for gold or other goods.
Even if the market moves it should be fairly easy to track the trades done and therefor set a rough value for items.