Trade Goods Prices Mechanism

[Castios]

Hello,

So I am trying to understand how it works in eu3. I am using this page - http://www.paradoxian.org/eu3wiki/Trade_Price

Lets check grain.

Grain
Base Price: 10
Supply is affected by:
- Province owner has Serfdom/Free Subjects ≥ 1: -50 %
- Province owner has Mercantilism/Free Trade ≥ 1: -80 %
- Unit standing in the province: 0 supply
Demand is affected by:
- Province owner at war: +10%
- Province owner has stability ≥ 2: +10%
- Province has an armory, training fields, barracks or regimental camp: +5% each
- Province has a conscription center +20 %
- Province produces fish: -50 %

My Questions:

1. Demand should be as high as possible, how about supply? If supply is low, then price is bigger. And if demand is big, then price also goes up, right? What we should maximize?
2.

The prices for goods are global so they are the same for every nation.

- I totally don't understand this, how it can be global if we can modify that in our provices by adding armory to grain province for example?
3. "- Province produces fish: -50 %" - What that means?

 

[Dauth]

Supply comes from every grain producing province. Demand comes from every province, if you produce fish then you need less grain, hence the reduction in demand.

If you want to skyrocket the grain price just park an infantry unit over every one you own and the demand will drop and the price will rise.

 

[Kurblius]

1.) Right, you can play with both supply in demand in theory. However, in practice you'll find you have more of an influence over demand. Troops in grain province causing supply to drop is a rare example of where you can have direct influence over supply in your gameplay. Blockades and looting provinces to reduce supply is just not practical. Unless you've achieved near-world conquest of course, though by then the price of goods would be irrelevant.
2.) Armories added anywhere, whether it produces grain or not, will increase demand. So lots of armories in the world will drive up the grain price in every province. If you have a lot of local improvements you can influence the global price of goods.
3.) What Dauth said. The more fish provinces you have, the lower the demand for grain. So if the colonizing powers start uncovering fish-producing provinces everywhere, the price of grain will plummet.

 

[DDRJake]

Bare in mind that price of a good is the same in every province producing that good. If Copper has a price of 35 ducats, it will be 35 ducats everywhere. The real trade value of the copper from a province is then 35 ducats*number of units produced, which is dependant on population and base tax, then multiplied by and * modifiers you have such as East India Trading Company, Sound toll, blockaded, Marketplace etc. This is why two different provinces producing the same good can have vastly different trade values.

Supply is very difficult to directly influence and usually with very little benefit. Demand can be directly influenced, most notably for metals by pulling most of the world into war. Again though, unless you are an absolute trade powerhouse or are role playing, there's not honestly that much to gain from doing this when your time and efforts could otherwise be spent expanding and such.

That said I'm very much focussed on trade in EU3 so it's a matter of great interest for me.

 

[Slym]

It's kinda funny when you get super-gigantic and you can watch your decisions change the entire world's prices.

As germany in IN every time I went to war the price of iron just about doubled, and whenever I moved my slider over a threshold for a good the price change was really fun to watch.

 

[DDRJake]

Actually, there's one thing I'd like to know. Is "Demand" a base value of 100% for every province, each of which have it lowered or increased by their factors. Example: Aberdeen has base 100% demand for grain, -50% for producing fish and +10% for being at war, leading to 60% demand.

Demand is then added up for all owned provinces then the average is taken. Demand can never be higher than 200% total though, but an individual province can have thousands of percent of demand particularly for iron/naval supplies.

this is my understanding, that is.

 

[Castios]

Iron
Base Price: 15
Demand is affected by:
- Province owner has ≥ 20 infantry regiments: +50%
- Province owner has land tech level ≥ 30: +10%
- Province owner has Land/Naval < 0: +50%

So for example, if I have > 20 infrantry regiments, then I increase world iron price. But what means those +50%? I increasing this price by 50%? Or it just increasing by +50% in every iron province I have and then game calculates new average price for world? So in the end, price increasing just a little if my amount of iron provinces is small?

We should look especially at it if we are world production leaders?

And why you guys keep talking about "trade powerhouse"? Because I will gain more from increased price if I trade in many cots? Atm I am playing colonial netherlands so I guess I really should look at those modifiers.

 

[BlitzMartinDK]

Actually, there's one thing I'd like to know. Is "Demand" a base value of 100% for every province, each of which have it lowered or increased by their factors. Example: Aberdeen has base 100% demand for grain, -50% for producing fish and +10% for being at war, leading to 60% demand.

Demand is then added up for all owned provinces then the average is taken. Demand can never be higher than 200% total though, but an individual province can have thousands of percent of demand particularly for iron/naval supplies.

this is my understanding, that is.

No, there is no base of 100 %. A province can add a negative amount to the total aggregate demand. Fish producing provinces can subtract from the demand of grain; as in exporting (dried/salted) fish to neighbours, thus lowering their demand for Grain...

Demand and Supply are the same all over the world. If world supply exceeds world demand, base prices will fall an amount which corresponds to the difference. (in real world, average prices would drop and that would increase demand until an equilibrium was found, but this is an approximation..)

How to read that one is : For all (populated, grainproducing) provinces in the world : if owner has serfdom, do x (to grain supply), if owner has merch. do y (to grain supply) etc. The base for a province is units, that is depending upon base tax value and pop. If you produce A units of grain in the province, you would add up all the relevant %'s (as -0.50 and -0.80 etc.) and multiply by A, then add that to the world aggregate of all provinces that produce grain. (the aggregate is capped at 1% and 200%)

After that you find the demand for Grain, by adding the demand (for Grain) for all (populated) provinces in the world (!) -this time as a multiplier on taxvalue (not certain if this is basetax or your taxincome..But I think basetax), and divided by 1000 -are there 1000 provinces in the game? not sure why they divide by 1000.. (this aggregate too is capped at 1% and 200%)


The Base Price can then locally be affected by modifiers to increase the Trade Value, which is used to calculate production income, and used to add to the local tradecenter. That's Marketplace, or Sound Toll...

The reason this matters more to Trading Nations is, that if a big % of you income is trade, then things that increase that income will matter more to you, than if trade is only a small amount of your income..

 

[DDRJake]

Not that I doubt what you say but I'd like something to back up your claim that demand is the sum of (all provinces*their taxes)/1000.

Everything else sounds good to me. How exactly does supply v demand affect prices though? If 100% supply and 100% demand leaves Grain's base price at 10, what does 90% supply and 100% demand leave with you with? nevermind, the wiki told me.

 

[BlitzMartinDK]

from that wiki-page : "d = SUM(taxvalue*demand_modifier/1000) # summed over all provinces "