So here's my conception. Today AN finally repaired Trading Post. All the people who wanted to do some serious shopping rushed for shopping spree. What such a people do when they don't have enough money for all the items they want? They buy gems for real cash and trade them for gold. This caused deflation in gems values. Yesterday, 2 days ago and so on 1 gold could buy you ~250-300 gems depending on time. Today for one gold you can buy 350-375 gems. Important thing here is that Exchanging currencies is not cut by any fees. current situation won't last long, people will buy what they've been wanting to for over a week, but the process will slow down with time and in near future gem prices will probably stabilize maybe not to previous values, but higher than on this shopping spree. So what I suggest you do if you have some spare gold is to invest it into gems right now when prices are low, keep the gems and when prices rise again sell all those gems for extra profit