i've run servers where the economy died within a week. the problem is always the same: admin shops with fixed prices. diamonds cost 64 forever, cobble costs 1 forever, nobody ever adjusts anything, and eventually the whole thing feels pointless. so i built a market that adjusts itself.

the entire economy runs on one rule: price = k / supply. every buy and sell moves the numbers. flood the market with cobblestone and it becomes genuinely worthless. hoard netherite and watch the price moon. players start thinking like traders: buy low, sell high, speculate on what everyone else is farming. it makes the economy a game instead of a vending machine.

there's a live shop gui with buy/sell prices and little trend arrows so you can see at a glance what's pumping and what's crashing. click to buy or sell 1, 64, or your whole stack. balances are virtual, so you don't need any economy plugin installed. the ledger saves itself in the background, so nothing is ever lost on restart.

what it does

• self-balancing prices driven by live supply and demand (price = k / supply)
• shop gui with trend arrows, buy/sell 1, 64, or all
• virtual balances, no economy plugin needed
• atomic ledger saves, nothing lost on restart
• /market, /market buy, /market sell, /market price, /market bal

setup

paper, purpur, or folia 1.21+, java 21. the k multiplier, price caps, sell rates, and the item list are all in the config. permission node is prismmarkets.use.