i've unlocked Miso, Beer, and Sake but i'm not sure exactly how. i'm pretty sure Miso comes from trading lots of Soy Beans, and after unlocking Beer, Sake comes from Beer.. what unlocked Beer?
also, i usually trade tons of everything. one person mentioned Golden Handicrafts from trading Handicrafts, but i've traded 15 regular Handicrafts in one trading period once and nothing got unlocked.
what are the criteria for unlocking items?
oh, and i've been keeping a list of regular trading prices (they don't change unless there is a rumor)
Sake is wonderful trading material--buy anywhere and sell to Dwarf Camp for ridiculous returns. Beer is almost as good (again, sell at Dwarf).... well there are lots of places to make money once you can teleport and blink back to base (and you can also just fight around with all the Prosperity equipment and Egbert, etc, but i want to unlocked all the items and get a complete list!)
i'll upload my current price list as a xls file tomorrow or this weekend.