dh_epic said:
Explain the "trading as a domestic source". I do like the first part, however.
Personally, I think resources would mean more if you actually had a sense of how large a supply you'd need to support your nation. Imagine being a little nation with a small infrastructure, and a huge supply of oil -- you'd be rich with all the surplus you'd have. Thus you could have the strongest military in the world and yet have the smallest borders. This inherently rewards a non-expansionist style, and balances and varies the gameplay strategy.
Here is how Strategic and Luxury trade would work:
(Demand) - Your have several levels of demand. Your range is from 'Military only' to 'The Affluent' all the way to 'Even the poor'. More people get the resource if the money is avaliable. THis affects happiness and utility. The demand of each city is expressed as RP.
(Supply) - You can close all but one of a resource if you choose. You can also put all of a resource you own on a market. The more avaliable, the less moeny it costs. You usually do not want to constrain the market too much unless you desire to cause a world wide depression, making it hard to sell your products.
(Domestic Sources) - The government will keep prices from being high for domestic trading. All resources will sell at 1 gold per RP.
(Where the Money comes from) - Cities generate gold each turn as taxes. These are transfered to the city that sells the resource.
(Cost of Resource) - There is a total demand for a market equal to all the cities who haven't gotten a resource domestically. There is a total number of sources of resource. Divide the demand by the supply. This number determines the price per RP. Here is some examples of what I mean: 1-10 = 1gpRP, 11-30 = 2gpRP, 31-60= 3gpRP, 61-100=4gpRP, 101-150=5gpRP, 151-210=6gpRP, 211-280=7gpRP,281-360=8gpRP, etc. This keeps early resources from being prohibative expensive. Also, demand for things such as oil and aluminum can get very high. A city will then pay for each resource at the lowest demand, and work its way up on some priority scale not determined yet at a higher level for each. Once the total amount of gold spent on a resource is determine, the gold is split between the cities that controlled the resources based on how many they contributed to the market.