Perandus Ledger

Perandus Ledger provides real-time market analytics and EV calculators for Path of Exile.

Use the calculators to find profitable currency strategies based on current market prices.

Browse the free tools below - no login required.

Join our Discord to ask questions, provide suggestions and give feedback.

Welcome to Curse of the Allflame league! All item prices are live data sourced from the Public Stash API (5 minutes behind live trades assuming no server strains) and Currency Exchange API (~1 hour behind the currency exchange, per GGG). Expected Value calculators, however, depend on community-driven drop weight data, which takes time to reaffirm each league.

At the start of a fresh league our drop weights carry over from the previous patch. Anything changed this patch may be inaccurate until we collect enough data to update it. Expect EV figures to shift over the first days and weeks as data comes in.

If you have data to contribute, reach out on our Discord!

Tools sit in four tiers: Public, Contributor, Contributor+ and Private.

Public tools cover farming strategies, which can support a large number of users without eroding their profitability. The higher tiers cover the market side of Path of Exile, where an edge only holds for a handful of people at once. Access gating is necessary to keep those tools useful to those who contribute data.

Public — everyone, no account needed

• In-map farm calculators
• Transfigured gem recommendations
• Gem leveling recommendations
• Bossing EV

Contributor — for those who have contributed desired data

• Expected value of identifying uniques (Forbidden Flame / Flesh and friends)
• Arbitrage opportunities on Faustus
• Cluster jewel market data
• Harvest reroll calculator
• Divination card tools

Contributor+ — for large contributions, or hard-to-get data

• Watcher's Eye data & rerolling recommendations
• Cluster jewel crafting / fracturing recommendations
• Gem double-corruption EV

Private — case by case

Granted per tool, to the people who contributed the data behind it - the crafting co-pilot, Valdo tools, and assorted one-offs.

How to contribute

The bar isn't high. What counts as useful shifts as a league ages and as I collect more. Data on the first 100 kills of a new boss is worth far more than 200 kills a week in.

Talk to me before you start collecting, so we can agree on what's needed for access. If you have an idea for a new tool and want to contribute data toward it, reach out directly.

The role isn't permanent: I may remove people who met the bare minimum a few leagues ago and have been inactive since.

If you have a history of publicly posting large datasets or PoE science on reddit, the Prohibited Library, or elsewhere, please get in touch.

Note: these tiers are earned with data, not money. Supporting on Patreon does not grant access to the tools above.

Current bounties

The list of data I'm currently after changes regularly and lives on Discord. Check there for the latest, and for anything not covered above.

Perandus Ledger is free and will stay free.

Your contribution covers server costs, and lets me dedicate more time to the site. With enough support I hope to migrate processing from my personal computer to a real server, which would let me track more items and trends, and build more tooling for both PoE1 and PoE2.

What you get

• No ads anywhere on the site
• Custom Feed access, so you can build your own dashboard from the tools you actually use

Supporting won't unlock the Contributor tools. Those are earned with data submissions, not money.

Already subscribed? Link your Patreon on your account page and it applies within seconds.

Support on Patreon ↗