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Friday Seller Tools – Amazon FBA Aged Inventory Break-Even Calculator
x402
Friday Seller Tools – Amazon FBA Aged Inventory Break-Even Calculator is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).
Calculates the break-even price for Amazon FBA aged inventory to help sellers decide whether to discount, liquidate, or continue holding aging stock.
Price / call$0.5
Success—
StatusUnknown
How this service works
Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.
Output
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.
Example use cases
Liquidation vs. discount decision for slow movers
“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?”
Pre-Q4 aged inventory clearance planning
“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?”
Ongoing profitability check for slow-selling SKU
“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.”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/amazon/fba/aged-inventory-break-evenWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| rows | array | |
| horizon_months | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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