Budget (€): The maximum total cost you are willing to spend on the 10 input skins combined.
Min ROI (%): Return on Investment. 100% means you break even. 110% means you aim for a 10% average profit across all outcomes. The engine will only output trade-ups above this threshold.
Float Buffer: A safety margin for the floats. If an output skin needs a float < 0.15, and your buffer is 0.015, the engine will only suggest input floats that result in an output of max 0.135. This protects you against unavailable exact floats on the market.
Buy Factor: Multiplier for the input prices. Use 1.0 for direct market purchases. Use e.g. 0.9 if you use Buy Orders (buying at 90% of the normal price).
Sell Fee (%): The tax deducted when you sell the outcome skin. Steam takes 15% (enter 15.0). Third-party sites usually take less (e.g. 5.0).
Item Type & Rarities: Choose if you want to calculate StatTrak™ or normal items, and select the rarity tier of your inputs (the output will always be one tier higher).
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