Free ecommerce break-even calculator launched to help sellers avoid profit traps

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A developer has created a free, browser-based break-even calculator for ecommerce sellers. The tool addresses common pitfalls where sellers launch ads without knowing their true profitability threshold. It works across platforms like Shopify and Amazon, handling fixed costs and marketing spend locally without requiring user data. The calculator is designed to prevent losses that occur when contribution margins are positive but overall business costs are not covered.

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