Here's what should happen in Conflict zones.
Prices for commodities that are produced in the system should go down, as people are trying to convert their at-risk-goods into safe credits. The Supply amount should no longer be raised since production has stopped, until the stations are completely sold out.
The demand for goods that are required for the system to produce their goods also disappears. Only very few people are willing to purchase goods from traders at a greatly reduced price, in hopes of coming out ahead of everyone else when the system normalizes (like speculating with stock)
The demand for goods that are required to live goes up slightly, as it is uncertain when the next delivery is coming, especially true for systems that rely on outside supply to survival like Extractors, Refineries, as these have no food production of their own. So things like Food, Power generators go up in price slightly.
The demand for goods that are actually war related should skyrocket. Hand Weapons, Battle Weapons, Reactive armor, Combat stabilizers, N-L-Weapons, Basic Medicine, Fuel should go up to easily 150% Galaxy average. This type of stolen goods can be sold at the commodities market without issue (or create a Black market at every station in a war state that pays 100% instead of 50% for these goods only)
The last thing this economy needs is having arbitrarily inflated prices of the most profitable commodities (gold and Palladidadium)
So to put this into an actual example, imagine a system with Industrial stations goes into Civil War.
From top to bottom
Hydrogen fuel supply starts to go down rapdily. It is being sold at 50cr/t and the supply also drains over time. Once it's drained, it becomes demanded at 150cr/t
Clothing and Domestic Appliances are in Supply, but the price drops significantly until the entire stock is sold out. Then it sits at LOW - 0 until the conflict is resolved.
Demand for Consumer Tech drops to LOW
The demand for all food items rises to HIGH, for example the price of Animal Meat rises to 1800cr
The demand for all industrial Materials drops to LOW
The demand for Drugs rises to HIGH, the price raises similarly to food.
The Supply for all machinery drops to 0 as stock is being bought out. The price drops considerably, for example Crop Harvesters for 1500cr.
The Supply for basic medicines becomes a demand similar to fuel.
Combat Stabilisers rises to a very high demand, 10k per unit. (I think Cstabs are 7k GA?)
The demand for metals suffers the same fate as the demand for industrial materials.
Same for Auto-Fabricators, HE Suits and Textiles.
Computer components stop being supplied, but the stock that is there can be bought for ~250 credits each until sold out.
Weapons and Armor prices also skyrocket to 150% GA. Battle weapons sell for 10k a unit, making even the huge distance trips necessary to find battle weapons trips worthwhile. N-L-W climb to ~3500 credits.