Dynamic Price

Enable Math Feature

Change your config.yml file:

• For 1.2.8 user: Change check-math: false to check-math: true.

• For 1.2.9+ user: Change

math:
  # Enabled base math calculate?
  # Will support + - * / only.
  enabled: false

to

math:
  # Enabled base math calculate?
  # Will support + - * / only.
  enabled: true

• Change

placeholder:
  data:
    can-used-in-amount: false

to

placeholder:
  data:
    can-used-in-amount: true

Set dynamic value for your product configs

Open one of your shop configs, find the product you want to enable dynamic price.

Like I want to enable for this product:

  A:
    display-name: 'Custom Name!'
      price-mode: ALL
    product-mode: CLASSIC_ALL
    products:
      1:
        material: sea_lantern
    buy-prices:
      1:
        economy-type: exp
        amount: '5+({buy-times-server}-{sell-times-server})*0.2'
        max-amount: 15
        min-amount: 1
        start-apply: 0
        placeholder: '{amount} Exp'
    sell-prices:
      1:
        economy-type: exp
        amount: '5+({buy-times-server}-{sell-times-server})*0.2'
        max-amount: 15
        min-amount: 1
        start-apply: 0
        placeholder: '{amount} Exp'

First, you need set price-mode to ALL or ANY.

Set amount option to the value you want here, like put a common dynamic formula here, if your math is not good, let me explain it:

• 5 is base price, which means the start price.

• 0.2 is each time one player buy or sell one this product, then the price will up or down.

• We also added max-amount and min-amount option, to avoid price is too high or too low.

The formula you set here is not limited, but you need carefully check whether player can earn money by purchase them then just sell them without do anything. Because of this, the max-amount and min-amount option is very important. For example, you set:

• Buy Price Formula: 2.8+{buy-times-server}*0.1-{sell-times-server}*0.06

• Sell Price Formula: 2.38+{buy-times-server}*0.1-{sell-times-server}*0.06

In this way, your max-amount option should be lower than the price at the n(th) purchase or sellling time.

How to get the number called n? This number must meet:

[(Buy Price Base Price - Sell Price Base Price)/(Buy Up Price - Sell Down Price)] >= Accumulation from 1 to n.

In this example: (2.8-2.38)/(0.1-0.06) >= 1+2+3+4 (if up to 5, the formula will not meet), so n max number is 4 in this example.

Remerber: Your different formulas require reasonable setting of different values in max-amount and min-amount. The safest approach is to set the price of each purchase or sellling change to the same value.

Another common dynamic price formula is price changed based on the percentage, like: 100 * (1.5 ^ ({buy-times-server}-{sell-times-server})). In this example:

• 100 is base price.

• 1.5 is the multiplier of the price after each purchase or sellling.

• In this example, first time buy with no sell is 100, then is 150 (+50%), then is 225 (150 + 150 * 50%).

• Don't forget set min-amount option to a number near 100 to avoid the price become too low!

Set buy / sell limits for your products

Please view Shops page for info.

Reset dynamic price

Many people ask this question, and I feel that the person asking this question simply does not understand the essence of UltimateShop. The dynamic price is determined by a formula, so you cannot reset the price directly. To reset the price, the variables used in your formula must be reset. If you use variables such as {buy-times-server} exactly as described in this section, they can be reset.

You can reset the buy times or sell times by commands or auto reset feature, you can find them at Commands page and Shops page.