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MZEST - PRICE FORMULA MZ

BMM Archive · July 15, 2026

Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

  • Original title: EST - PRICE FORMULA MZ
  • Original author: estriole
  • Original date: October 25, 2020
  • Source thread: https://forums.rpgmakerweb.com/threads/est-price-formula-mz.129116/
  • Source forum path: Game Development Engines > RPG Maker Javascript Plugins > JS Plugin Releases (RMMZ)

Summary

■ Information ╒══════════════════════════╛ EST - PRICE FORMULA MZ Version: 1.0 By Estriole

Archived First Post

■ Information ╒══════════════════════════╛
EST - PRICE FORMULA MZ
Version: 1.0
By Estriole
File name: .js

■ Introduction ╒══════════════════════════╛
This script make us able to create formula for item / equip price.
for example item like seltzer from star ocean where it become more
expensive as the game time increases.

■ Features ╒══════════════════════════╛
- set price formula... global buy and sell formula
- set buy formula. buying will use that formula as priority
- set sell formula. selling will use that formula as priority
- when buying item... if the shop set the specific price of that item...
if have price formula => buy use specific price, sell use specific price
if have buy formula => buy use specific price, sell use specific price
if have sell formula => sell use sell formula.

■ Changelog ╒══════════════════════════╛
v1.0 2020.10.22 Finish the plugin

■ Plugin Download ╒══════════════════════════╛
https://www.dropbox.com/s/4yml2wbgj36mun9/EST_PRICE_FORMULA_MZ.js?dl=0

■ Screenshots ╒══════════════════════════╛
1603632505616.png


■ Demo ╒══════════════════════════╛
https://www.dropbox.com/sh/vhf1jhpydfr3vne/AACXtmj85frlI81AAmAcK50Ha?dl=0
click download to download the entire folder.

■ How to use ╒══════════════════════════╛
at item / weapon / armor database notebox add:
<price_formula>
specify your formula here
</price_formula>
for adding price formula. it will be used as global buy/sell formula.
if there's buy formula or sell formula... this will be overwritten.

<buy_formula>
specify your formula here
</buy_formula>
for adding buy formula... this will overwrite normal price formula.
but if there's specify price in the shop scene... this will be overwritten.

<sell_formula>
specify your formula here
</sell_formula>
for adding sell formula... this will overwrite normal price formula.
and this also overwrite specify price.

you can set your formula to return value... there's also shortcut variable
so it's easier to create formula
oprice => item original price set in database
s => $gameSwitches
=> usage: s.value(switch id);
=> or if you want to flip a switch in calculation: s.setValue(switch id, value)
v => $gameVariables
=> usage: v.value(variable id);
=> or if you want to modify variable in calculation: v.setValue(variable id, value)
p => $gameParty;
a => $gameActors;
gs = $gameSystem;
pt = $gameSystem.playtime();
bc = $gameSystem.battleCount();
sc = $gameSystem.saveCount();
inum = $gameParty.numItems(item);
WARNING: if you set your formula wrong. there's a possibility item
will be priced at Infinity Price
this usually because the formula ended with SOMETHING DIVIDED BY ZERO
thus result = Infinity.

■ Dependencies ╒══════════════════════════╛
none

■ Compatibility ╒══════════════════════════╛
MZ is new engine... so i cannot say for sure.
but it should be compatible with most things.

■ Parameters ╒══════════════════════════╛
None

■ License ╒══════════════════════════╛
Free to use in all project (except the one containing pornography)
as long as i credited (ESTRIOLE).

■ Extra Credit ╒══════════════════════════╛

■ Support ╒══════════════════════════╛
While I'm flattered and I'm glad that people have been sharing and
asking support for scripts in other RPG Maker communities, I would
like to ask that you please avoid posting my scripts outside of where
I frequent because it would make finding support and fixing bugs
difficult for both of you and me.

If you're ever looking for support, I can be reached at the following:
[ http://forums.rpgmakerweb.com/ ]
pm me : estriole

also support to compatibility with VisuStella is not possible.
because their code is obfuscated thus cannot be read by human.
if there's incompatibility... please ask VisuStella Team.

■ Donate ╒══════════════════════════╛
If you want to support my work you can donate here
https://www.makerdevs.com/profile/estriole

■ Author's Notes ╒══════════════════════════╛
None

Downloads / Referenced Files

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License / Terms Note

■ License ╒══════════════════════════╛ Free to use in all project (except the one containing pornography) as long as i credited (ESTRIOLE). ■ Extra Credit ╒══════════════════════════╛

Creator Claims / Removal

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#rmmz#plugin-archive

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