Uhh I kinda support this post although I will say it in another way:
does anyone from this thread really understands how supply and demand work? Because this system was so overcomplicated (when I checked the wiki) I seriously doubt more than 5% of people understood what the hell is going on with supply & demand, mathematically speaking
New system will be simpler and with basically the same effects. Probably it can be even better.
CURRENT SYSTEM
The price of a good is the base price of the good times demand divided by supply. Base price is 3 for "luxury" goods and 2 for other goods. Supply and demand are computed on a global level; each province contributes supply of a single good and demand of all goods based on the goods' demand modifiers and base tax. Specifically:
supply % = sum of all ( province goods produced of the good * supply scale for the good ) * 1%
demand % = sum of all ( province goods produced * product of all ( province demand modifiers ) * 0.1 ) * 1%[1]
price = base price * demand % / supply %
Jump up ↑ The comment in prices.txt is a holdover from EU3 and is no longer valid. See [1] and the talk page for tests.
The supply scale for a good affects how many goods produced equates to actual supply. For example, grain has a supply scale of 0.4, so 1 unit of grain produced equals 0.4% supply.
Supply % has a ceiling of 200%. Demand % has a floor of 1% and a ceiling of 500% for all goods except Iron (200%).
Manipulating supply is generally easier than manipulating demand, since supply is a much more local and trade good-specific phenomenon than demand.
Each point of positive stability increases the nation's provinces' demand for all goods. Note that the demand being the same from stability 0 to -3 is likely a bug, and it is likely intended to be 100%, not 72.9% at 0 stability. The effects are as follows:
Stability effect
3 133.1%
2 108,9%
1 89.1%
0 72.9%
-1 72.9%
-2 72.9%
-3 72.9%
The demand modifiers are multiplicative, so, for example, a province that produces fish and has an Armory will have 105% * 50% = 52.5% demand for Grain.
"Provinces producing" is the total number of provinces that have that trade good specified as their last known trade good. Note that 79 provinces have unknown trade goods at all dates, and provinces that start uncolonized will have unknown trade goods, so the numbers here are only estimates.
POST AOW SYSTEM
The prices are fixed until historical flavour event happends, such as slave trade. You can influence prices via decisions and proper reactions on events.
The end.