{"uid":"cap_jOJ_nZS5Du-LvSJkmp7Ls","slug":"friday-seller-tools-amazon-fba-aged-inventory-break-even-calculator-ab1b2813","name":"Friday Seller Tools – Amazon FBA Aged Inventory Break-Even Calculator","description":"Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.","url":"https://friday-seller-tools-production.up.railway.app/v1/amazon/fba/aged-inventory-break-even","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"rows":{"type":"array","items":{"type":"object","title":"FbaAgedInventoryRow","required":["sku","units","age_days","days_to_next_surcharge_tier","unit_cost","current_price","referral_fee_percent","fulfillment_fee_per_unit","monthly_storage_per_unit","current_surcharge_per_unit_month","next_tier_surcharge_per_unit_month","removal_fee_per_unit","recovery_value_per_unit"],"properties":{"sku":{"type":"string","title":"Sku","pattern":"^[A-Za-z0-9][A-Za-z0-9 ._/\\-]{0,63}$"},"asin":{"anyOf":[{"type":"string","pattern":"^[A-Z0-9]{10}$"},{"type":"null"}],"title":"Asin","default":null},"units":{"type":"integer","title":"Units","maximum":1000000,"minimum":1},"age_days":{"type":"integer","title":"Age Days","maximum":100000,"minimum":0},"reference":{"anyOf":[{"type":"string","maxLength":80,"minLength":1},{"type":"null"}],"title":"Reference","default":null},"unit_cost":{"type":"number","title":"Unit Cost","maximum":1000000,"minimum":0},"current_price":{"type":"number","title":"Current Price","maximum":1000000,"exclusiveMinimum":0},"discount_percent":{"type":"number","title":"Discount Percent","default":20,"maximum":90,"minimum":0},"referral_fee_percent":{"type":"number","title":"Referral Fee Percent","maximum":90,"minimum":0},"removal_fee_per_unit":{"type":"number","title":"Removal Fee Per Unit","maximum":100000,"minimum":0},"resale_value_per_unit":{"type":"number","title":"Resale Value Per Unit","default":0,"maximum":1000000,"minimum":0},"recovery_value_per_unit":{"type":"number","title":"Recovery Value Per Unit","maximum":1000000,"minimum":0},"fulfillment_fee_per_unit":{"type":"number","title":"Fulfillment Fee Per Unit","maximum":100000,"minimum":0},"monthly_storage_per_unit":{"type":"number","title":"Monthly Storage Per Unit","maximum":100000,"minimum":0},"days_to_next_surcharge_tier":{"type":"integer","title":"Days To Next Surcharge Tier","maximum":100000,"minimum":0},"current_surcharge_per_unit_month":{"type":"number","title":"Current Surcharge Per Unit Month","maximum":100000,"minimum":0},"next_tier_surcharge_per_unit_month":{"type":"number","title":"Next Tier Surcharge Per Unit Month","maximum":100000,"minimum":0}},"description":"One seller-supplied aged FBA SKU with cost and disposition assumptions.","additionalProperties":false},"title":"Rows","maxItems":1000,"minItems":1},"horizon_months":{"type":"integer","title":"Horizon Months","default":3,"maximum":24,"minimum":1}}},"responseSchema":{"type":"json","example":{"job_id":"example","status":"queued"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nN812mgwJY3olXNZ7KuN5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates the break-even price for Amazon FBA aged inventory to help sellers decide whether to discount, liquidate, or continue holding aging stock.","exampleAgentPrompt":"I have an ASIN B08XYZ1234 that's been sitting in FBA for 200 days — my cost of goods is $12, FBA fulfillment fee is $3.50, and monthly storage fee is $0.80 per unit. Can you calculate the break-even price so I know whether to discount it, liquidate, or pull it out?","exampleUseCases":[{"title":"Liquidation vs. discount decision for slow movers","prompt":"My ASIN B07ABC5678 has been in FBA for 240 days, cost me $18 per unit to source, FBA fee is $4.20, and storage is running $1.20 a month per unit — can you calculate the break-even so I know if liquidating at Amazon's rate actually saves me money?"},{"title":"Pre-Q4 aged inventory clearance planning","prompt":"Before long-term storage fees hit in October, I need break-even prices for my aged FBA inventory: ASIN B09DEF9012, COGS $9, FBA fee $2.80, monthly storage $0.60 — what's the minimum I should price it at to not lose money?"},{"title":"Ongoing profitability check for slow-selling SKU","prompt":"I've got a SKU that's been sitting for 6 months in FBA with a cost of $25, fulfillment fee of $5.50, and $0.90/month in storage fees — run the break-even analysis so I can decide if it's worth running a sale or just requesting removal."}],"resultDescription":"Returns a job_id and queued status immediately, with the computed break-even price, estimated holding costs, and recommended action (e.g. discount, liquidate, remove) delivered asynchronously once the computation completes.","failureModes":["Missing required cost inputs (COGS, FBA fees) result in validation error","Invalid or unrecognized ASIN format causes rejection","Insufficient inventory age data prevents accurate long-term storage fee projection","Service unavailability returns queued status with delayed result","Extreme edge cases (zero COGS, negative fees) may produce unexpected output"],"whenToPreferThis":"Use this endpoint when an Amazon FBA seller needs a quick, data-driven break-even calculation specifically for aged or slow-moving inventory, particularly when approaching Amazon's long-term storage fee thresholds. Prefer this over generic margin calculators when the decision context is liquidation, markdown, or removal of FBA stock rather than new product pricing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:50:13.114Z","isFirstParty":false}