At this moment large amounts of peoples has a rare goods, like silk, bronze (tin|copper), iron, steel, and siver and gold.
Some peoples lives in big villages, so have a chance to exchange with other villagers for other goods.
But if someone live in middle of nowhere, or in a middle-of-ass he hadnt ability for active exchange and for better development.
So, I have a idea of "commodity exchange" - one big wending stand. Anyone can travel here and put some valuable goods for exchange or buy some goods for their coins.
if travel at long distance is a big trouble for most peoples, than different exchanges must be organized at a different sgrids.
key problems - how add "exchangers address" to a travel menu. Im, at example, dont want travel with boat up and down and around for searching a adequate exchanger, which dont blame me.