Elite grade·Quarantined Collection
Corona Australis
Corona Australis is a Elite-grade cosmetic from Quarantined Collection. Ten compatible Assassin inputs from this collection give a 50.00% chance of this item, one of 2 possible results.
Corona Australis prices
A buy order is what a buyer offers you; a sell listing is what you pay. These are saved observations, not reserved stock. Unusual variants are excluded; a quality option does not guarantee market availability. How to compare buy/sell prices and convert keys to refined.
backpack.tf: Requesting a price check…
Steam: Steam pricing is temporarily paused. Prices use backpack.tf only.
| Market | Highest eligible buy order | Lowest eligible sell listing |
|---|---|---|
| backpack.tfClean bot quotes · keys / refined | 61 keys + 47.22 refSaved eligible quote | 64 keys + 19.88 refSaved eligible quote |
Saved data reloads every 30 seconds. Each quote’s timestamp shows its actual check time. Queued checks are not completed checks, and expired prices remain reference-only.
Planning a Corona Australis trade-up
Quarantined Collection has 2 Elite outcomes. A Assassin input from this collection contributes 5.00% to the chance of this specific item. Repeating one input name or mixing different names within the same tier does not change that share.
| Inputs from this collection per 10-item contract | 1 contract | 5 contracts | 10 contracts |
|---|---|---|---|
| 10 of 10 | 50.00% | 96.88% | 99.90% |
| 5 of 10 | 25.00% | 76.27% | 94.37% |
| 1 of 10 | 5.00% | 22.62% | 40.13% |
These are theoretical, independent attempts with an unchanged recipe, not forecasts or case-opening odds. Five contracts consume 50 inputs; ten consume 100. Other inputs must be compatible and come from other collections. All ten inputs must be Non-Strange and the same grade. A higher chance of this item is not necessarily a higher chance of profit.
Buy Corona Australis directly or attempt a trade-up?
Compare the target’s eligible sell listing with the total cost of ten compatible inputs. A trade-up buys a chance at every possible result—not just Corona Australis. Evaluate all 2 outputs from this collection, plus any outputs introduced by mixing collections. Use eligible backpack.tf buy orders for estimated resale proceeds; an asking price is not an instant cash-out price.
Missing or stale output quotes mean profitability is unconfirmed, not that the output is worth zero. A saved listing also does not prove that ten copies are available. Check timestamps, quality, and stock before spending.
How to trade up to Corona Australis
Ten compatible Assassin inputs from Quarantined Collection give a 50.00% chance of Corona Australis: one of 2 equally likely Elite outputs. Mix the input items below, keeping Strange and Non-Strange separate.
With five inputs from this collection in a ten-item mixed-collection contract, its collection share is 50%, so Corona Australis's probability becomes 25.00%. These are trade-up odds, not case-opening odds.
Compatible Assassin inputs
What can Corona Australis trade up into?
Corona Australis is at the highest recorded tier in Quarantined Collection. There are no next-grade outputs in this collection, so it cannot be used for a higher-grade trade-up.
Calculator links open research recipes, not purchases. Availability, compatible variants, fees and price changes affect results; positive expected value does not guarantee profit.