You can get agricultural market data easily enough. You'd have to figure out transport costs (which could be done using a heuristic and google maps). The next

You can get agricultural market data easily enough. You'd have to figure out transport costs (which could be done using a heuristic and google maps). The next step is getting them to upload the prices they get, then filtering that (as buyers may try to destroy the system). But that's for version 2.