In the Trade club you can buy and sell items. All you need to do is
say on the Trade line that you have the item for sale and if you want
state a prize for it. Often it is an auction, that means that the prize is
set buy the highest bidder. 

The commands available to a Club Member is:
Trade  :	Talk on the Traders' line.
Trade :		See all the Traders currently on.\n");

Help topics available:

traders