About gpovalues.com
The short version
We scrape public trade messages from the GPO trading Discord, pull out who's trading what for what, filter scams and spam, and solve for each item's fair value using math. No editor opinions, no paid tiers, no "trust me bro." If the data changes, the values change.
Who runs this
An independent project, not affiliated with Grand Quest Games, Roblox, or the GPO development team. Bug reports, corrections, and feature requests are welcome through the Discord server or the /feedback slash command.
Principles
- Math-only — no editor opinions. Numbers move when the data moves.
- Public data only — observed trade messages. No private tips, no leaks.
- Honest confidence — thin-data items are flagged as low confidence with wider ranges.
- Reproducible — same inputs, same outputs. Every value is derivable from the raw trade data.
- Free forever — no paywalls, no premium unlocks, no "pro tier."
What you can do here
- Look up any item's value — with a confidence band, 60-day price history, trade count, and demand signal.
- Build and check trades — the calculator tells you win, fair, or lose based on whether value ranges overlap.
- See what's moving — the changes page tracks price shifts between solver runs.
- Chat with the bot — commands for value lookups, trade checks, and community-voted suggestions.
Who runs this, and how we make money
GPO Values is run by the same people as PetMart, a shop that sells Grand Piece Online items for real money. You should know that before you trust a value on this site, so it is on this page rather than buried in a footer — and it is repeated next to every buy link on the site.
It does not touch the numbers. Values come from a solver run over observed trades; there is no manual override available to anyone, including us, and the full dataset is public. The conflict is worth naming anyway: we sell items, so a higher published value would flatter our own prices. That is why every value ships with the confidence band and the trade count behind it, and why the raw data is downloadable — the claim is checkable rather than trusted.
Credits and data sources
Item sprites and wiki metadata: Grand Piece Online Fandom wiki. Trade data: opt-in Discord trading channels. Everything else is our own pipeline.
See also: Full methodology · Confidence bands · FAQ · Discord bot · Privacy