Grading Calculator: Is It Worth the Risk?
Every item sent to the Grader comes back as Replica, One-Star, Two-Star or Three-Star, and there is no reroll. Set your own odds below and see the expected outcome before you risk a valuable find.
Last updated 2026-07-02
Sliders are relative weight, not fixed percentages. They auto-scale to 100% together, so pushing one up shrinks the others’ share.
At your current sliders you’re putting 35% on Two-Star or better. You need 34% just to match the ungraded value; the rest is upside.
How the grading calculator works
Type in the item’s appraised value, the number the game shows before you hand it to the Grader. Then drag the four sliders to whatever chance you think each grade lands. The sliders are relative weight, not fixed percentages, so pulling Two-Star up shrinks the other three automatically and everything keeps summing to 100%. The result panel updates live: an expected dollar value, the percentage gain or loss against the ungraded appraisal, and a verdict on whether your current odds clear the breakeven line. The four preset cards below the calculator run the same odds against a Junk Yard, Back Alley, Farmyard and Shipyard item at once, so you can see how the same risk plays out at different price points.
The four grading outcomes, verified
| Grade | Sell price | Notes |
|---|---|---|
| Replica | 55% | Worst outcome, cuts the appraised value nearly in half. |
| One-Star | 85% | Still a loss against the ungraded appraisal. |
| Two-Star | 135% | First outcome that pays more than doing nothing. |
| Three-Star | 200% | Doubles the appraised value, the best roll available. |
Those four percentages are the part of the system that holds up across every account we and other trackers have tested. A Two-Star versus Three-Star comparison matters most on expensive hauls: the gap between them is 65 percentage points of pure upside, while the gap between Replica and One-Star is 30 points of downside. Run your own item through the calculator above rather than assuming a Three Star, since the developer has not confirmed how often each grade actually lands.
Is grading worth it in Storage Hunters: Open World?
The honest answer is that nobody, including the developer, has published the real per-grade odds, so anyone claiming exact numbers is guessing. What guides that have tracked grading outcomes agree on is that low grades show up often and that caution matters most on expensive items, where a bad roll stings. That is the whole reason the calculator uses adjustable sliders instead of a single fake percentage: plug in whatever you personally believe your odds are and it tells you the breakeven chance of landing Two-Star or better. If your honest guess sits below that line, the math says skip it. A cheap Junk Yard trinket rarely justifies the wait either way, since even a good grade only adds a small dollar amount.
Where to find the Grader NPC
The Grader is in the Shopping Mall. Walk up and interact with the NPC, then submit an item you won at auction or a Lost Item you picked up while exploring. Grading itself costs nothing, the only price is time in the queue while your item waits for a result.
Gems, waiting, and whether to skip the timer
Grading time scales with the item’s rarity: Junk and Common pieces clear fast, while Legendary and Mythical items sit in the queue much longer. You can spend Gems to skip that wait and reveal the grade instantly, but Gems only remove the delay, they do not shift which of the four grades you land on. The exact gem cost per rarity tier has not been published, so treat a skip as a convenience purchase for your patience, not a way to buy a better roll.
Grading vs. mutations: two different systems
It is easy to mix these up because both change what an item sells for. Mutations roll on the item itself and stack additively, so a Silver (2x) plus Gold (4x) item sells for 6x, not 8x, and you can check every combination on the value calculator. Grading happens afterward at the Grader NPC and multiplies that already-mutated sale price by 55%, 85%, 135% or 200%, on top of whatever the mutations already set. See how each of the 23 mutations compares on the mutation tier list before deciding whether an item is even worth the grading queue.
Frequently asked questions
Is grading worth it in Storage Hunters: Open World?
It depends on how confident you are in a Two-Star or better result. Replica (55%) and One-Star (85%) both sell for less than the item is already worth, so grading a cheap item rarely matters. On an expensive find, weigh your own odds guess against the breakeven line in the calculator above before you risk it.
What does Replica sell for in Storage Hunters?
Replica is the worst grade and sells for 55% of the item’s appraised value, roughly half. It is the outcome that makes grading a gamble rather than a free upgrade.
Can you reroll a bad grade in Storage Hunters: Open World?
No. Grading is a one-shot result. Once the Grader stamps an item, that grade is final, there is no paid or free way to try again on the same item.
Where is the Grader NPC in Storage Hunters?
The Grader is in the Shopping Mall. Walk up, interact, and submit an item you won at auction or a Lost Item you picked up on the map.
Do Gems guarantee a better grade in Storage Hunters?
No. Gems only skip the waiting timer so you see the result immediately, they do not change which of the four grades you land on. The outcome is decided the moment you submit the item.
Does grading time depend on item rarity in Storage Hunters?
Yes. Junk and Common items clear the queue quickly, while Legendary and Mythical items sit much longer. The game has not published exact minute values, so budget extra time on rarer finds.
What is the difference between mutations and grading in Storage Hunters?
Mutations roll on the item itself and stack additively, Silver 2x plus Gold 4x sells for 6x. Grading happens afterward at the Grader NPC and multiplies that already-mutated price by 55%, 85%, 135% or 200%. They are separate systems that both affect the final sale price.
How we verified the grading math
We sent items through the Grader ourselves and recorded the payout against each item’s appraised value, confirming the 55%, 85%, 135% and 200% figures across dozens of pulls and cross-checking them against independent guides. What we could not verify is the odds of landing any one grade or the exact Gem cost to skip a given rarity’s timer, since the developer has not published either, and our own sample was too small to trust as a probability distribution.
That gap is why this calculator asks for your own odds estimate instead of quoting a number we cannot back up. We re-test the four sell percentages after every content update and will publish real odds here the moment the developer confirms them or a large enough community dataset settles it.
Verified 2026-07-06 · By Jim Liu