Prices config¶

Arguably the most important config for the plugin and the place where you will need to spend most time getting prices tuned to your liking.

Since IFS 5 a new prices format was introduced. It uses the new name based system to target specific Minecraft items and offers advanced features such as expressions.

Configuration file¶

Items¶

Minecraft item IDs are used as keys in the configuration file. It looks like this:

item_prices:
  ...
  acacia_leaves:
    buyprice: 8
    sellprice: 1
  ...

Prices¶

As demonstrated in the above example, you can set default buy and/or sell prices, these will then be used in all price calculations done by IFS. If a default sell price is set, the sell factor configuration setting is not used as this only applies when calculating a sell price based on multiplying the buy price.

Expressions¶

Expressions currently only apply to buy prices. They allow you to include prices for other items to make a calculation. Although they are very powerfull, they can also create issues or cause infinite loops when used improperly. It looks like this:

item_prices:
  ...
  pufferfish_spawn_egg:
    buyprice: 50
  iron_ore:
    buyprice: 50
  pufferfish_bucket:
    expression: '%bucket% + %pufferfish_spawn_egg%'
  ...

When a shop with a pufferfish_bucket is created, this happens internally:

Get the price of bucket (first checks config, then recipes, calculates iron ingot and then bucket price based on iron_ore price and smelting cost price)
Get the price of pufferfish_spawn_egg (configured)
Evaluate expression %bucket% + %pufferfish_spawn_egg%
Final price for pufferfish_bucket is now known

Pricing guide¶

Getting the right price¶

sellFactor is usually lowered, as the default is still quite high
use the log file and shop info to analyse player behaviour and tune prices
figure out what kind of item is worth a lot
make sure you don't create feedback loops (where one item depends on another and then back again) as this will cause IFS (and possibly your server) to crash

To any server owner reading this, if you have a good strategy for keeping a stable economy and setting the correct prices, please contact me. I will then add a section about this to this page.