{"uid":"cap_6Mlw6s6tLHSkROe4hAZM5","slug":"friday-seller-tools-amazon-fba-vs-fbm-cost-comparison-a80d90b4","name":"Friday Seller Tools – Amazon FBA vs FBM Cost Comparison","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/fulfillment/fba-vs-fbm-costs","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"skus":{"type":"array","items":{"type":"object","title":"FbaFbmSkuInput","required":["sku","product_name","sale_price","product_cost_per_unit","referral_fee_percent","monthly_units","fba","fbm"],"properties":{"fba":{"type":"object","title":"FbaCostInputs","required":["fulfillment_fee_per_unit"],"properties":{"monthly_fixed_cost":{"type":"number","title":"Monthly Fixed Cost","default":0,"maximum":10000000,"minimum":0},"storage_per_unit_month":{"type":"number","title":"Storage Per Unit Month","default":0,"maximum":1000000,"minimum":0},"prep_and_label_per_unit":{"type":"number","title":"Prep And Label Per Unit","default":0,"maximum":1000000,"minimum":0},"fulfillment_fee_per_unit":{"type":"number","title":"Fulfillment Fee Per Unit","maximum":1000000,"minimum":0},"inbound_shipping_per_unit":{"type":"number","title":"Inbound Shipping Per Unit","default":0,"maximum":1000000,"minimum":0},"other_variable_cost_per_unit":{"type":"number","title":"Other Variable Cost Per Unit","default":0,"maximum":1000000,"minimum":0}},"additionalProperties":false},"fbm":{"type":"object","title":"FbmCostInputs","required":["outbound_shipping_per_unit"],"properties":{"monthly_fixed_cost":{"type":"number","title":"Monthly Fixed Cost","default":0,"maximum":10000000,"minimum":0},"packaging_per_unit":{"type":"number","title":"Packaging Per Unit","default":0,"maximum":1000000,"minimum":0},"pick_and_pack_per_unit":{"type":"number","title":"Pick And Pack Per Unit","default":0,"maximum":1000000,"minimum":0},"storage_per_unit_month":{"type":"number","title":"Storage Per Unit Month","default":0,"maximum":1000000,"minimum":0},"outbound_shipping_per_unit":{"type":"number","title":"Outbound Shipping Per Unit","maximum":1000000,"minimum":0},"other_variable_cost_per_unit":{"type":"number","title":"Other Variable Cost Per Unit","default":0,"maximum":1000000,"minimum":0}},"additionalProperties":false},"sku":{"type":"string","title":"Sku","pattern":"^[A-Za-z0-9._-]+$","maxLength":80,"minLength":1},"sale_price":{"type":"number","title":"Sale Price","maximum":1000000,"exclusiveMinimum":0},"product_name":{"type":"string","title":"Product Name","maxLength":200,"minLength":2},"monthly_units":{"type":"integer","title":"Monthly Units","maximum":10000000,"minimum":1},"referral_fee_percent":{"type":"number","title":"Referral Fee Percent","maximum":100,"minimum":0},"product_cost_per_unit":{"type":"number","title":"Product Cost Per Unit","maximum":1000000,"minimum":0}},"additionalProperties":false},"title":"Skus","maxItems":100,"minItems":1},"marketplace":{"type":"string","const":"amazon_us","title":"Marketplace","default":"amazon_us"}}},"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_IyWVSuXa9LvkTYkeS7YE5","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 and compares Amazon FBA (Fulfillment by Amazon) versus FBM (Fulfilled by Merchant) costs for a given product to help sellers choose the most profitable fulfillment method.","exampleAgentPrompt":"For my Amazon listing — a 2 lb kitchen gadget selling for $34.99 in the Kitchen & Dining category with dimensions 10x6x4 inches — can you run an FBA vs FBM cost comparison so I can see which fulfillment method is more profitable?","exampleUseCases":[{"title":"Heavy product FBA profitability check","prompt":"I'm selling a 15 lb electric standing desk on Amazon for $189. It's bulky — 48x24x6 inches. Can you compare what FBA would cost me versus shipping it myself as FBM so I can figure out which one actually leaves me more margin?"},{"title":"New seller fulfillment decision","prompt":"I'm launching my first Amazon product — a set of silicone baking mats, 1.2 lbs, 14x10x2 inches, selling for $22.99 in the Kitchen category. Can you calculate the FBA fees versus what it would cost me to fulfill by merchant so I know which way to go?"},{"title":"Switching fulfillment method evaluation","prompt":"I'm currently doing FBM for my $45 yoga mat (3 lbs, 26x6x6 inches, Sports & Outdoors category) but considering switching to FBA. Can you show me a side-by-side cost breakdown so I can see if FBA would actually save me money?"}],"resultDescription":"Returns a job_id and queued status, with the eventual result containing a detailed cost breakdown comparing FBA fees (Amazon pick/pack, storage, referral) against FBM costs (seller-borne shipping, handling), along with a net profit comparison and a recommendation for which fulfillment method yields higher margins for the given product.","failureModes":["Missing required product dimensions or weight returns a 400 validation error","Invalid or unrecognized product category causes incorrect fee calculation","Extremely large or oversize items may fall outside standard FBA tier calculations","Job may remain queued if processing backend is under load, requiring polling by job_id","Incorrect selling price inputs lead to misleading margin estimates"],"whenToPreferThis":"Use this endpoint when an Amazon seller needs a data-driven decision on whether FBA or FBM is more cost-effective for a specific SKU, especially for products where weight, size, or category dramatically affect FBA fee tiers. Prefer this over generic fee calculators when you need a side-by-side net margin comparison rather than just raw fee lookup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:51:55.749Z","isFirstParty":false}